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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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![Disney Store Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/612760217/complimentary.jpg)
![Disney Store Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/612760191/complimentary.jpg)
Disney Store
Long Sleeve Button-Down Shirt
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
44% off estimated retail![Dressed Up by Gymboree Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/612031270/complimentary.jpg)
![Dressed Up by Gymboree Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/612031226/complimentary.jpg)
Dressed Up by Gymboree
Short Sleeve Polo
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
63% off estimated retail![Hanna Andersson Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610940005/complimentary.jpg)
![Hanna Andersson Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610939967/complimentary.jpg)
Hanna Andersson
Long Sleeve T-Shirt
Size 3-6 mo
$11.99 $6.59 45% off with code GOBIG
36% off estimated retail![Old Navy Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611253491/complimentary.jpg)
![Old Navy Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611253420/complimentary.jpg)
Old Navy
Long Sleeve Button-Down Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
50% off estimated retail![Go Gently Nation Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610912117/complimentary.jpg)
![Go Gently Nation Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610912072/complimentary.jpg)
Go Gently Nation
Long Sleeve T-Shirt
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
54% off estimated retail![Seed Heritage Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610685681/complimentary.jpg)
![Seed Heritage Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610685625/complimentary.jpg)
Seed Heritage
Short Sleeve T-Shirt
Size 3-6 mo
$5.99 $3.29 45% off with code GOBIG
60% off estimated retail![Janie and Jack Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610631960/complimentary.jpg)
![Janie and Jack Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610631897/complimentary.jpg)
Janie and Jack
Long Sleeve Button-Down Shirt
Size 3-6 mo
$10.99 $6.04 45% off with code GOBIG
71% off estimated retail![Primary Clothing Zip Up Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/609958049/complimentary.jpg)
![Primary Clothing Zip Up Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/609957983/complimentary.jpg)
Primary Clothing
Zip Up Hoodie
Size 3-6 mo
$12.99 $7.14 45% off with code GOBIG
63% off estimated retail![Origany Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/606723079/complimentary.jpg)
![Origany Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/606723043/complimentary.jpg)
Origany
Long Sleeve Button-Down Shirt
Size 3-6 mo
$16.99 $9.34 45% off with code GOBIG
61% off estimated retail![Hanna Andersson Zip Up Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/566363575/complimentary.jpg)
![Hanna Andersson Zip Up Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/566363502/complimentary.jpg)
Hanna Andersson
Zip Up Hoodie
Size 3-6 mo
$21.99 $12.09 45% off with code GOBIG
54% off estimated retail![First Impressions Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607343495/complimentary.jpg)
![First Impressions Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607343460/complimentary.jpg)
First Impressions
Long Sleeve T-Shirt
Size 3-6 mo
$5.99 $3.29 45% off with code GOBIG
66% off estimated retail![First Impressions Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607343629/complimentary.jpg)
![First Impressions Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607343597/complimentary.jpg)
First Impressions
Long Sleeve T-Shirt
Size 3-6 mo
$5.99 $3.29 45% off with code GOBIG
66% off estimated retail![First Impressions Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607340251/complimentary.jpg)
![First Impressions Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607340152/complimentary.jpg)
First Impressions
Long Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
50% off estimated retail![First Impressions Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607340424/complimentary.jpg)
![First Impressions Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607340365/complimentary.jpg)
First Impressions
Long Sleeve T-Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
55% off estimated retail![First Impressions Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607342006/complimentary.jpg)
![First Impressions Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607341964/complimentary.jpg)
First Impressions
Long Sleeve T-Shirt
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
44% off estimated retail![First Impressions Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607342134/complimentary.jpg)
![First Impressions Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607342088/complimentary.jpg)
First Impressions
Long Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
50% off estimated retail![First Impressions Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607324383/complimentary.jpg)
![First Impressions Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607324325/complimentary.jpg)
First Impressions
Short Sleeve T-Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
55% off estimated retail![Janie and Jack Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/600758550/complimentary.jpg)
![Janie and Jack Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/600758402/complimentary.jpg)
Janie and Jack
Long Sleeve Button-Down Shirt
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
74% off estimated retail![Janie and Jack Pullover Sweater (view 2)](https://cf-assets-thredup.thredup.com/assets/605951414/complimentary.jpg)
![Janie and Jack Pullover Sweater (view 1)](https://cf-assets-thredup.thredup.com/assets/605951330/complimentary.jpg)
Janie and Jack
Pullover Sweater
Size 3-6 mo
$14.99 $8.24 45% off with code GOBIG
71% off estimated retail![Tuti Fruiti Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/605518429/complimentary.jpg)
![Tuti Fruiti Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/605518349/complimentary.jpg)
Tuti Fruiti
Short Sleeve T-Shirt
Size 3-6 mo
$5.99 $3.29 45% off with code GOBIG
14% off estimated retail![Cafe Press Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/602816749/complimentary.jpg)
![Cafe Press Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/602816687/complimentary.jpg)
Cafe Press
Short Sleeve T-Shirt
Size 3-6 mo
$11.99 $6.59 45% off with code GOBIG
33% off estimated retail![Hanna Andersson Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/602526434/complimentary.jpg)
![Hanna Andersson Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/602526301/complimentary.jpg)
Hanna Andersson
Long Sleeve T-Shirt
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
41% off estimated retail![Rothschild One Piece Snowsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/602167064/complimentary.jpg)
![Rothschild One Piece Snowsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/602167014/complimentary.jpg)
Rothschild
One Piece Snowsuit
Size 3-6 mo
$25.99 $14.29 45% off with code GOBIG
80% off estimated retail![Quiksilver One Piece Snowsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/600880768/complimentary.jpg)
![Quiksilver One Piece Snowsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/600880712/complimentary.jpg)
Quiksilver
One Piece Snowsuit
Size 3-6 mo
$20.99 $11.54 45% off with code GOBIG
52% off estimated retail![Primary Clothing Pullover Sweater (view 2)](https://cf-assets-thredup.thredup.com/assets/598135652/complimentary.jpg)
![Primary Clothing Pullover Sweater (view 1)](https://cf-assets-thredup.thredup.com/assets/598135632/complimentary.jpg)
Primary Clothing
Pullover Sweater
Size 3-6 mo
$13.99 $7.69 45% off with code GOBIG
68% off estimated retail![Lord & Taylor Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/593229598/complimentary.jpg)
![Lord & Taylor Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/593229481/complimentary.jpg)
Lord & Taylor
Long Sleeve T-Shirt
Size 3-6 mo
$10.99 $6.04 45% off with code GOBIG
50% off estimated retail![Hanna Andersson Pullover Sweater (view 2)](https://cf-assets-thredup.thredup.com/assets/594275981/complimentary.jpg)
![Hanna Andersson Pullover Sweater (view 1)](https://cf-assets-thredup.thredup.com/assets/594275915/complimentary.jpg)
Hanna Andersson
Pullover Sweater
Size 3-6 mo
$22.99 $12.64 45% off with code GOBIG
57% off estimated retail![Rabbit Bear Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/594619934/complimentary.jpg)
![Rabbit Bear Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/594619932/complimentary.jpg)
Rabbit Bear
Long Sleeve T-Shirt
Size 3-6 mo
$5.99 $3.29 45% off with code GOBIG
14% off estimated retail![The Little White Company Zip Up Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/593220136/complimentary.jpg)
![The Little White Company Zip Up Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/593219875/complimentary.jpg)
The Little White Company
Zip Up Hoodie
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
65% off estimated retail![Rachel Zoe Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/592527021/complimentary.jpg)
![Rachel Zoe Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/592526963/complimentary.jpg)
Rachel Zoe
Long Sleeve T-Shirt
Size 3-6 mo
$14.99 $8.24 45% off with code GOBIG
79% off estimated retail![Nautica Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/589906911/complimentary.jpg)
![Nautica Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/589906741/complimentary.jpg)
Nautica
Long Sleeve Button-Down Shirt
Size 3-6 mo
$12.99 $7.14 45% off with code GOBIG
55% off estimated retail![Hanna Andersson Pullover Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/588007806/complimentary.jpg)
![Hanna Andersson Pullover Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/588007778/complimentary.jpg)
Hanna Andersson
Pullover Hoodie
Size 3-6 mo
$18.99 $10.44 45% off with code GOBIG
53% off estimated retail![Special Occasions Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/591744117/complimentary.jpg)
![Special Occasions Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/591743998/complimentary.jpg)
Special Occasions
Short Sleeve Button-Down Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
43% off estimated retail![Calvin Klein Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/589513321/complimentary.jpg)
![Calvin Klein Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/589510256/complimentary.jpg)
Calvin Klein
Long Sleeve T-Shirt
Size 3-6 mo
$6.99 $3.84 45% off with code GOBIG
36% off estimated retail![TFW Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/589353747/complimentary.jpg)
![TFW Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/589353684/complimentary.jpg)
TFW
Long Sleeve Button-Down Shirt
Size 3-6 mo
$6.99 $3.84 45% off with code GOBIG
68% off estimated retail![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/588254620/complimentary.jpg)
![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/588254695/complimentary.jpg)
U.S. Polo Assn.
Short Sleeve Button-Down Shirt
Size 3-6 mo
$10.99 $6.04 45% off with code GOBIG
67% off estimated retail![Timberland Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/585642862/complimentary.jpg)
![Timberland Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/585642804/complimentary.jpg)
Timberland
Short Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
69% off estimated retail![Rachel Zoe Short Sleeve Henley (view 2)](https://cf-assets-thredup.thredup.com/assets/585563200/complimentary.jpg)
![Rachel Zoe Short Sleeve Henley (view 1)](https://cf-assets-thredup.thredup.com/assets/585563127/complimentary.jpg)
Rachel Zoe
Short Sleeve Henley
Size 3-6 mo
$44.99 $24.74 45% off with code GOBIG
58% off estimated retail![Zara Baby Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/583323044/complimentary.jpg)
![Zara Baby Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/583322985/complimentary.jpg)
Zara Baby
Long Sleeve Button-Down Shirt
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
65% off estimated retail![Lester's Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/586058718/complimentary.jpg)
![Lester's Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/586058699/complimentary.jpg)
Lester's
Short Sleeve Button-Down Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
27% off estimated retail![Old Navy Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/584642356/complimentary.jpg)
![Old Navy Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/584642260/complimentary.jpg)
Old Navy
Long Sleeve Button-Down Shirt
Size 3-6 mo
$10.99 $6.04 45% off with code GOBIG
45% off estimated retail![Mori Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/581396770/complimentary.jpg)
![Mori Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/581396697/complimentary.jpg)
Mori
Long Sleeve Button-Down Shirt
Size 3-6 mo
$13.99 $7.69 45% off with code GOBIG
68% off estimated retail![Jack And Lily Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/582015889/complimentary.jpg)
![Jack And Lily Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/582015796/complimentary.jpg)
Jack And Lily
Long Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
40% off estimated retail![Mori Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/582222900/complimentary.jpg)
![Mori Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/582222863/complimentary.jpg)
Mori
Long Sleeve Button-Down Shirt
Size 3-6 mo
$18.99 $10.44 45% off with code GOBIG
56% off estimated retail![First Impressions Pullover Sweater (view 2)](https://cf-assets-thredup.thredup.com/assets/579199166/complimentary.jpg)
![First Impressions Pullover Sweater (view 1)](https://cf-assets-thredup.thredup.com/assets/579199064/complimentary.jpg)
First Impressions
Pullover Sweater
Size 3-6 mo
$12.99 $7.14 45% off with code GOBIG
71% off estimated retail![Hanna Andersson Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/576321241/complimentary.jpg)
![Hanna Andersson Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/576321171/complimentary.jpg)
Hanna Andersson
Long Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
52% off estimated retail![Child of Mine by Carter's Zip Up Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/541507046/complimentary.jpg)
![Child of Mine by Carter's Zip Up Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/541507006/complimentary.jpg)
Child of Mine by Carter's
Zip Up Hoodie
Size 3-6 mo
$10.99 $6.04 45% off with code GOBIG
26% off estimated retail![Little Lad Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/570431046/complimentary.jpg)
![Little Lad Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/570430977/complimentary.jpg)
Little Lad
Short Sleeve Button-Down Shirt
Size 3-6 mo
$10.99 $6.04 45% off with code GOBIG
59% off estimated retail![Appaman Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/571199487/complimentary.jpg)
![Appaman Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/571199449/complimentary.jpg)
Appaman
Long Sleeve Button-Down Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
77% off estimated retail