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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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![Polo by Ralph Lauren Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/612859673/complimentary.jpg)
![Polo by Ralph Lauren Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/612859655/complimentary.jpg)
Polo by Ralph Lauren
Long Sleeve T-Shirt
Size 2T
$7.99 $4.39 45% off with code GOBIG
55% off estimated retail![Polo by Ralph Lauren Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/612449600/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/612449530/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve Polo
Size 2T
$11.99 $6.59 45% off with code GOBIG
71% off estimated retail![Hanna Andersson Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/612176978/complimentary.jpg)
![Hanna Andersson Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/612176927/complimentary.jpg)
Hanna Andersson
Short Sleeve T-Shirt
Size 2T
$11.99 $6.59 45% off with code GOBIG
36% off estimated retail![Polo by Ralph Lauren Pullover Sweater (view 2)](https://cf-assets-thredup.thredup.com/assets/599375271/complimentary.jpg)
![Polo by Ralph Lauren Pullover Sweater (view 1)](https://cf-assets-thredup.thredup.com/assets/599375203/complimentary.jpg)
Polo by Ralph Lauren
Pullover Sweater
Size 2T
$19.99 $10.99 45% off with code GOBIG
66% off estimated retail![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/611902537/complimentary.jpg)
![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/611902516/complimentary.jpg)
U.S. Polo Assn.
Short Sleeve Button-Down Shirt
Size 2T
$12.99 $7.14 45% off with code GOBIG
61% off estimated retail![Polo by Ralph Lauren Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610747912/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610747872/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve T-Shirt
Size 2T
$12.99 $7.14 45% off with code GOBIG
69% off estimated retail![Polo by Ralph Lauren Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610872165/complimentary.jpg)
![Polo by Ralph Lauren Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610872099/complimentary.jpg)
Polo by Ralph Lauren
Long Sleeve T-Shirt
Size 2T
$11.99 $6.59 45% off with code GOBIG
50% off estimated retail![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610410297/complimentary.jpg)
![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610410270/complimentary.jpg)
U.S. Polo Assn.
Short Sleeve Button-Down Shirt
Size 2T
$9.99 $5.49 45% off with code GOBIG
70% off estimated retail![Assorted Brands Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/606284202/complimentary.jpg)
![Assorted Brands Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/606284136/complimentary.jpg)
Assorted Brands
Short Sleeve T-Shirt
Size 2T
$9.99 $5.49 45% off with code GOBIG
33% off estimated retail![Hanna Andersson 3/4 Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610418538/complimentary.jpg)
![Hanna Andersson 3/4 Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610418483/complimentary.jpg)
Hanna Andersson
3/4 Sleeve T-Shirt
Size 2T
$10.99 $6.04 45% off with code GOBIG
47% off estimated retail![Janie and Jack Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/592215900/complimentary.jpg)
![Janie and Jack Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/592215773/complimentary.jpg)
Janie and Jack
Long Sleeve Button-Down Shirt
Size 2T
$11.99 $6.59 45% off with code GOBIG
69% off estimated retail![Duluth Trading Co. Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609424890/complimentary.jpg)
![Duluth Trading Co. Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609424885/complimentary.jpg)
Duluth Trading Co.
Long Sleeve Button-Down Shirt
Size 2T
$10.99 $6.04 45% off with code GOBIG
50% off estimated retail![The Children's Place Zip Up Hoodie (view 2)](https://cf-assets-thredup.thredup.com/assets/610304215/complimentary.jpg)
![The Children's Place Zip Up Hoodie (view 1)](https://cf-assets-thredup.thredup.com/assets/610304082/complimentary.jpg)
The Children's Place
Zip Up Hoodie
Size 2T
$13.99 $7.69 45% off with code GOBIG
48% off estimated retail![Florence Eiseman Pullover Sweater (view 2)](https://cf-assets-thredup.thredup.com/assets/609400800/complimentary.jpg)
![Florence Eiseman Pullover Sweater (view 1)](https://cf-assets-thredup.thredup.com/assets/609400776/complimentary.jpg)
Florence Eiseman
Pullover Sweater
Size 2T
$22.99 $12.64 45% off with code GOBIG
72% off estimated retail![Appaman Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607148316/complimentary.jpg)
![Appaman Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607148274/complimentary.jpg)
Appaman
Long Sleeve Button-Down Shirt
Size 2T
$8.99 $4.94 45% off with code GOBIG
75% off estimated retail![Lili Cactus Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610402536/complimentary.jpg)
![Lili Cactus Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610402517/complimentary.jpg)
Lili Cactus
Short Sleeve Button-Down Shirt
Size 2T
$13.99 $7.69 45% off with code GOBIG
48% off estimated retail![Hudson Ferrell Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/610167234/complimentary.jpg)
![Hudson Ferrell Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/610167148/complimentary.jpg)
Hudson Ferrell
Long Sleeve Button-Down Shirt
Size 2T
$20.99 $11.54 45% off with code GOBIG
63% off estimated retail![Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609548692/complimentary.jpg)
![Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609548659/complimentary.jpg)
Ralph Lauren
Long Sleeve Button-Down Shirt
Size 2T
$17.99 $9.89 45% off with code GOBIG
71% off estimated retail![Baby Gap Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/608558136/complimentary.jpg)
![Baby Gap Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/608557980/complimentary.jpg)
Baby Gap
Long Sleeve Button-Down Shirt
Size 2T
$9.99 $5.49 45% off with code GOBIG
63% off estimated retail![Genuine Kids from Oshkosh Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609176366/complimentary.jpg)
![Genuine Kids from Oshkosh Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609176338/complimentary.jpg)
Genuine Kids from Oshkosh
Long Sleeve Button-Down Shirt
Size 2T
$4.99 $2.74 45% off with code GOBIG
61% off estimated retail![Polo by Ralph Lauren Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/609166585/complimentary.jpg)
![Polo by Ralph Lauren Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/609166566/complimentary.jpg)
Polo by Ralph Lauren
Short Sleeve T-Shirt
Size 2T
$8.99 $4.94 45% off with code GOBIG
62% off estimated retail![Serendipity Organics Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607917376/complimentary.jpg)
![Serendipity Organics Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607917307/complimentary.jpg)
Serendipity Organics
Long Sleeve T-Shirt
Size 2T
$13.99 $7.69 45% off with code GOBIG
51% off estimated retail![Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/607735563/complimentary.jpg)
![Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/607735496/complimentary.jpg)
Ralph Lauren
Long Sleeve Button-Down Shirt
Size 2T
$14.99 $8.24 45% off with code GOBIG
76% off estimated retail![Florence Eiseman Long Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/607259383/complimentary.jpg)
![Florence Eiseman Long Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/607259318/complimentary.jpg)
Florence Eiseman
Long Sleeve Polo
Size 2T
$20.99 $11.54 45% off with code GOBIG
72% off estimated retail![Baby Gap Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/605396907/complimentary.jpg)
![Baby Gap Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/605396948/complimentary.jpg)
Baby Gap
Short Sleeve Button-Down Shirt
Size 2T
$10.99 $6.04 45% off with code GOBIG
55% off estimated retail![Janie and Jack Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/605396396/complimentary.jpg)
![Janie and Jack Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/605396354/complimentary.jpg)
Janie and Jack
Short Sleeve Button-Down Shirt
Size 2T
$13.99 $7.69 45% off with code GOBIG
64% off estimated retail![Hanna Andersson Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/606440738/complimentary.jpg)
![Hanna Andersson Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/606440706/complimentary.jpg)
Hanna Andersson
Long Sleeve T-Shirt
Size 2T
$10.99 $6.04 45% off with code GOBIG
47% off estimated retail![Assorted Brands Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/601323239/complimentary.jpg)
![Assorted Brands Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/601323193/complimentary.jpg)
Assorted Brands
Short Sleeve Button-Down Shirt
Size 2T
$8.99 $4.94 45% off with code GOBIG
59% off estimated retail![Janie and Jack Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/604890017/complimentary.jpg)
![Janie and Jack Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/604889964/complimentary.jpg)
Janie and Jack
Long Sleeve Button-Down Shirt
Size 2T
$11.99 $6.59 45% off with code GOBIG
69% off estimated retail![Mick Mack Ltd Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/605005427/complimentary.jpg)
![Mick Mack Ltd Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/605005361/complimentary.jpg)
Mick Mack Ltd
Long Sleeve Button-Down Shirt
Size 2T
$9.99 $5.49 45% off with code GOBIG
65% off estimated retail![Ralph Lauren Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/603446723/complimentary.jpg)
![Ralph Lauren Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/603446649/complimentary.jpg)
Ralph Lauren
Long Sleeve Button-Down Shirt
Size 2T
$17.99 $9.89 45% off with code GOBIG
71% off estimated retail![7 For All Mankind Long Sleeve Henley (view 2)](https://cf-assets-thredup.thredup.com/assets/602818947/complimentary.jpg)
![7 For All Mankind Long Sleeve Henley (view 1)](https://cf-assets-thredup.thredup.com/assets/602818897/complimentary.jpg)
7 For All Mankind
Long Sleeve Henley
Size 2T
$10.99 $6.04 45% off with code GOBIG
75% off estimated retail