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Boys' tops come in such a variety of styles and colors, they're the perfect way to start planning an entire outfit. Shop at thredUP when you're looking for an excellent selection of like-new boys' tops that range from casual to dressy and at prices up to 90% off estimated retail.
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![Crewcuts Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608817205/complimentary.jpg)
![Crewcuts Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608817097/complimentary.jpg)
Crewcuts
Short Sleeve T-Shirt
Size Medium kids
$13.99 $7.69 45% off with code GOBIG
57% off estimated retail![Marvel Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608821027/complimentary.jpg)
![Marvel Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608820995/complimentary.jpg)
Marvel
Short Sleeve T-Shirt
Size X-Small kids
$8.99 $4.94 45% off with code GOBIG
50% off estimated retail![7 For All Mankind Zip Up Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/608168502/complimentary.jpg)
![7 For All Mankind Zip Up Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/608168289/complimentary.jpg)
7 For All Mankind
Zip Up Hoodie
Size 24 mo
$12.99 $7.14 45% off with code GOBIG
70% off estimated retail![Patagonia Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608169350/complimentary.jpg)
![Patagonia Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608169020/complimentary.jpg)
Patagonia
Long Sleeve T-Shirt
Size 6-12 mo
$10.99 $6.04 45% off with code GOBIG
38% off estimated retail![Hanna Andersson Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609979800/complimentary.jpg)
![Hanna Andersson Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609979759/complimentary.jpg)
Hanna Andersson
Short Sleeve T-Shirt
Size 130 cm
$9.99 $5.49 45% off with code GOBIG
47% off estimated retail![Smockingbird Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609607033/complimentary.jpg)
![Smockingbird Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609607002/complimentary.jpg)
Smockingbird
Long Sleeve Button-Down Shirt
Size 3T
$19.99 $10.99 45% off with code GOBIG
63% off estimated retail![Under Armour Active T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609399008/complimentary.jpg)
![Under Armour Active T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609398959/complimentary.jpg)
Under Armour
Active T-Shirt
Size Small youth
$18.99 $10.44 45% off with code GOBIG
53% off estimated retail![Andy & Evan Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609498740/complimentary.jpg)
![Andy & Evan Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609498691/complimentary.jpg)
Andy & Evan
Short Sleeve Button-Down Shirt
Size Small tots
$12.99 $7.14 45% off with code GOBIG
76% off estimated retail![Daniel Cremieux Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608803769/complimentary.jpg)
![Daniel Cremieux Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608803702/complimentary.jpg)
Daniel Cremieux
Short Sleeve Button-Down Shirt
Size 14
$14.99 $8.24 45% off with code GOBIG
63% off estimated retail![Nomad by Craft + Flow Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610022633/complimentary.jpg)
![Nomad by Craft + Flow Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610022602/complimentary.jpg)
Nomad by Craft + Flow
Short Sleeve Button-Down Shirt
Size 8
$11.99 $6.59 45% off with code GOBIG
52% off estimated retail![Old Navy Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610181531/complimentary.jpg)
![Old Navy Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610181456/complimentary.jpg)
Old Navy
Short Sleeve Button-Down Shirt
Size 14
$16.99 $9.34 45% off with code GOBIG
48% off estimated retail![Janie and Jack Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/609400889/complimentary.jpg)
![Janie and Jack Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/609400865/complimentary.jpg)
Janie and Jack
Short Sleeve Polo
Size 12-18 mo
$13.99 $7.69 45% off with code GOBIG
50% off estimated retail![Thrasher Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609851219/complimentary.jpg)
![Thrasher Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609851033/complimentary.jpg)
Thrasher
Short Sleeve T-Shirt
Size Medium youth
$12.99 $7.14 45% off with code GOBIG
63% off estimated retail![Superman Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609780359/complimentary.jpg)
![Superman Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609780142/complimentary.jpg)
Superman
Long Sleeve T-Shirt
Size Medium kids
$6.99 $3.84 45% off with code GOBIG
45% off estimated retail![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609148917/complimentary.jpg)
![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609148775/complimentary.jpg)
Lauren by Ralph Lauren
Long Sleeve Button-Down Shirt
Size 10
$14.99 $8.24 45% off with code GOBIG
62% off estimated retail![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609138543/complimentary.jpg)
![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609138380/complimentary.jpg)
Lauren by Ralph Lauren
Long Sleeve Button-Down Shirt
Size 20
$13.99 $7.69 45% off with code GOBIG
64% off estimated retail![Polo by Ralph Lauren Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/609189723/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/609189620/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve Polo
Size 8
$10.99 $6.04 45% off with code GOBIG
68% off estimated retail![Polo by Ralph Lauren Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609159228/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609159153/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve T-Shirt
Size 10
$8.99 $4.94 45% off with code GOBIG
53% off estimated retail![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608999887/complimentary.jpg)
![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608999694/complimentary.jpg)
Lauren by Ralph Lauren
Long Sleeve Button-Down Shirt
Size 12
$12.99 $7.14 45% off with code GOBIG
70% off estimated retail![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608999159/complimentary.jpg)
![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608998903/complimentary.jpg)
Lauren by Ralph Lauren
Long Sleeve Button-Down Shirt
Size 10
$13.99 $7.69 45% off with code GOBIG
68% off estimated retail![Polo by Ralph Lauren Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/609046909/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/609046782/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve Polo
Size 12
$10.99 $6.04 45% off with code GOBIG
68% off estimated retail![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608995023/complimentary.jpg)
![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608994692/complimentary.jpg)
Lauren by Ralph Lauren
Long Sleeve Button-Down Shirt
Size 20
$16.99 $9.34 45% off with code GOBIG
61% off estimated retail![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608994350/complimentary.jpg)
![Lauren by Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608994103/complimentary.jpg)
Lauren by Ralph Lauren
Long Sleeve Button-Down Shirt
Size 20
$16.99 $9.34 45% off with code GOBIG
61% off estimated retail![Polo by Ralph Lauren Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609047350/complimentary.jpg)
![Polo by Ralph Lauren Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609047221/complimentary.jpg)
Polo by Ralph Lauren
Long Sleeve T-Shirt
Size 12
$11.99 $6.59 45% off with code GOBIG
59% off estimated retail![Polo by Ralph Lauren Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/608992865/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/608992736/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve Polo
Size Medium kids
$28.99 $15.94 45% off with code GOBIG
70% off estimated retail![Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608993485/complimentary.jpg)
![Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608993246/complimentary.jpg)
Ralph Lauren
Long Sleeve Button-Down Shirt
Size 18
$14.99 $8.24 45% off with code GOBIG
66% off estimated retail![Lacoste Sport Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608784321/complimentary.jpg)
![Lacoste Sport Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608784298/complimentary.jpg)
Lacoste Sport
Short Sleeve T-Shirt
Size 10
$15.99 $8.79 45% off with code GOBIG
70% off estimated retail![Hanna Andersson Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608283377/complimentary.jpg)
![Hanna Andersson Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608283319/complimentary.jpg)
Hanna Andersson
Long Sleeve T-Shirt
Size 120 cm
$12.99 $7.14 45% off with code GOBIG
38% off estimated retail![Vineyard Vines Long Sleeve Top (view 2)](https://cf-assets-thredup.thredup.com/assets/606735793/complimentary.jpg)
![Vineyard Vines Long Sleeve Top (view 1)](https://cf-assets-thredup.thredup.com/assets/606735747/complimentary.jpg)
Vineyard Vines
Long Sleeve Top
Size Medium youth
$16.99 $9.34 45% off with code GOBIG
58% off estimated retail![Vineyard Vines Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/606736613/complimentary.jpg)
![Vineyard Vines Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/606736572/complimentary.jpg)
Vineyard Vines
Long Sleeve Button-Down Shirt
Size 8
$22.99 $12.64 45% off with code GOBIG
58% off estimated retail![Hanna Andersson Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/606726923/complimentary.jpg)
![Hanna Andersson Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/606726878/complimentary.jpg)
Hanna Andersson
Long Sleeve Button-Down Shirt
Size 10
$23.99 $13.19 45% off with code GOBIG
48% off estimated retail![Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/606726442/complimentary.jpg)
![Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/606726480/complimentary.jpg)
Ralph Lauren
Long Sleeve Button-Down Shirt
Size Medium youth
$19.99 $10.99 45% off with code GOBIG
68% off estimated retail![Polo by Ralph Lauren Pullover Sweater (view 2)](https://cf-assets-thredup.thredup.com/assets/609468284/complimentary.jpg)
![Polo by Ralph Lauren Pullover Sweater (view 1)](https://cf-assets-thredup.thredup.com/assets/609468267/complimentary.jpg)
Polo by Ralph Lauren
Pullover Sweater
Size 10
$20.99 $11.54 45% off with code GOBIG
64% off estimated retail![Minnow Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610088393/complimentary.jpg)
![Minnow Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610088306/complimentary.jpg)
Minnow
Long Sleeve Button-Down Shirt
Size 2T
$20.99 $11.54 45% off with code GOBIG
81% off estimated retail![Colosseum Athletics Pullover Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/609130443/complimentary.jpg)
![Colosseum Athletics Pullover Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/609130219/complimentary.jpg)
Colosseum Athletics
Pullover Hoodie
Size X-Large kids
$17.99 $9.89 45% off with code GOBIG
59% off estimated retail![Under Armour Active T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608804985/complimentary.jpg)
![Under Armour Active T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608804939/complimentary.jpg)
Under Armour
Active T-Shirt
Size X-Large youth
$18.99 $10.44 45% off with code GOBIG
53% off estimated retail![Gap Kids Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608802535/complimentary.jpg)
![Gap Kids Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608802509/complimentary.jpg)
Gap Kids
Short Sleeve Button-Down Shirt
Size 12
$12.99 $7.14 45% off with code GOBIG
51% off estimated retail![Hanna Andersson Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610033490/complimentary.jpg)
![Hanna Andersson Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610033405/complimentary.jpg)
Hanna Andersson
Long Sleeve Button-Down Shirt
Size 12
$24.99 $13.74 45% off with code GOBIG
59% off estimated retail![Hanna Andersson Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609951464/complimentary.jpg)
![Hanna Andersson Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609951344/complimentary.jpg)
Hanna Andersson
Long Sleeve Button-Down Shirt
Size 12
$28.99 $15.94 45% off with code GOBIG
53% off estimated retail![O'Neill Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609973595/complimentary.jpg)
![O'Neill Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609973520/complimentary.jpg)
O'Neill
Short Sleeve Button-Down Shirt
Size Large youth
$17.99 $9.89 45% off with code GOBIG
57% off estimated retail![J.Crew Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610119993/complimentary.jpg)
![J.Crew Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610119788/complimentary.jpg)
J.Crew
Long Sleeve Button-Down Shirt
Size 6
$23.99 $13.19 45% off with code GOBIG
73% off estimated retail![Baby Gap Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610171901/complimentary.jpg)
![Baby Gap Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610171790/complimentary.jpg)
Baby Gap
Long Sleeve Button-Down Shirt
Size 6
$14.99 $8.24 45% off with code GOBIG
55% off estimated retail![Hanna Andersson Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609578150/complimentary.jpg)
![Hanna Andersson Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609578113/complimentary.jpg)
Hanna Andersson
Long Sleeve T-Shirt
Size 12-18 mo
$9.99 $5.49 45% off with code GOBIG
52% off estimated retail![Janie and Jack Pullover Sweater (view 2)](https://cf-assets-thredup.thredup.com/assets/609304646/complimentary.jpg)
![Janie and Jack Pullover Sweater (view 1)](https://cf-assets-thredup.thredup.com/assets/609304525/complimentary.jpg)
Janie and Jack
Pullover Sweater
Size 12-18 mo
$16.99 $9.34 45% off with code GOBIG
67% off estimated retail![Ralph Lauren Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608800070/complimentary.jpg)
![Ralph Lauren Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608799987/complimentary.jpg)
Ralph Lauren
Short Sleeve Button-Down Shirt
Size 4
$11.99 $6.59 45% off with code GOBIG
62% off estimated retail![Under Armour Active T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609522017/complimentary.jpg)
![Under Armour Active T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609521931/complimentary.jpg)
Under Armour
Active T-Shirt
Size Medium youth
$22.99 $12.64 45% off with code GOBIG
43% off estimated retail![Polo by Ralph Lauren Pullover Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/609475964/complimentary.jpg)
![Polo by Ralph Lauren Pullover Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/609475874/complimentary.jpg)
Polo by Ralph Lauren
Pullover Hoodie
Size 3
$27.99 $15.39 45% off with code GOBIG
67% off estimated retail![Under Armour Active T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608781591/complimentary.jpg)
![Under Armour Active T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608781565/complimentary.jpg)
Under Armour
Active T-Shirt
Size X-Large youth
$18.99 $10.44 45% off with code GOBIG
53% off estimated retail![Under Armour Active T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609539899/complimentary.jpg)
![Under Armour Active T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609539872/complimentary.jpg)
Under Armour
Active T-Shirt
Size Medium youth
$26.99 $14.84 45% off with code GOBIG
48% off estimated retail![Michael Kors Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610076522/complimentary.jpg)
![Michael Kors Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610076495/complimentary.jpg)
Michael Kors
Long Sleeve Button-Down Shirt
Size 14
$17.99 $9.89 45% off with code GOBIG
72% off estimated retail![Rumi + Ryder Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609145052/complimentary.jpg)
![Rumi + Ryder Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609145015/complimentary.jpg)
Rumi + Ryder
Short Sleeve Button-Down Shirt
Size 8
$12.99 $7.14 45% off with code GOBIG
68% off estimated retail![Minecraft Short Sleeve Jersey (view 2)](https://cf-assets-thredup.thredup.com/assets/608774042/complimentary.jpg)
![Minecraft Short Sleeve Jersey (view 1)](https://cf-assets-thredup.thredup.com/assets/608773996/complimentary.jpg)
Minecraft
Short Sleeve Jersey
Size Medium youth
$10.99 $6.04 45% off with code GOBIG
21% off estimated retail![Gymboree Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608350224/complimentary.jpg)
![Gymboree Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608350195/complimentary.jpg)
Gymboree
Short Sleeve Button-Down Shirt
Size 4T
$12.99 $7.14 45% off with code GOBIG
51% off estimated retail![The Children's Place Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609896530/complimentary.jpg)
![The Children's Place Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609896441/complimentary.jpg)
The Children's Place
Long Sleeve T-Shirt
Size 4T
$7.99 $4.39 45% off with code GOBIG
56% off estimated retail