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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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![U.S. Polo Assn. Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/487256496/complimentary.jpg)
![U.S. Polo Assn. Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/487256475/complimentary.jpg)
U.S. Polo Assn.
Short Sleeve Polo
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
63% off estimated retail![J.G. Hook Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/486624713/complimentary.jpg)
![J.G. Hook Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/486624545/complimentary.jpg)
J.G. Hook
Long Sleeve Button-Down Shirt
Size 4
$8.99 $4.94 45% off with code GOBIG
75% off estimated retail![New Legends Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/481050561/complimentary.jpg)
![New Legends Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/481050411/complimentary.jpg)
New Legends
Long Sleeve Button-Down Shirt
Size 4
$9.99 $5.49 45% off with code GOBIG
44% off estimated retail![iDO by Minicomf Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/475179560/complimentary.jpg)
![iDO by Minicomf Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/475179611/complimentary.jpg)
iDO by Minicomf
Long Sleeve Button-Down Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
84% off estimated retail![Old Navy Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/472132994/complimentary.jpg)
![Old Navy Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/472132889/complimentary.jpg)
Old Navy
Long Sleeve Button-Down Shirt
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
37% off estimated retail![Chaps Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/469342513/complimentary.jpg)
![Chaps Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/469342459/complimentary.jpg)
Chaps
Short Sleeve Button-Down Shirt
Size 4
$9.99 $5.49 45% off with code GOBIG
70% off estimated retail![Rocawear Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/468572544/complimentary.jpg)
![Rocawear Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/468572451/complimentary.jpg)
Rocawear
Short Sleeve Button-Down Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
59% off estimated retail![First Impressions Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/467967499/complimentary.jpg)
![First Impressions Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/467967440/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![The Children's Place Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/465421917/complimentary.jpg)
![The Children's Place Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/465421886/complimentary.jpg)
The Children's Place
Long Sleeve Button-Down Shirt
Size 4
$8.99 $4.94 45% off with code GOBIG
57% off estimated retail![Calvin Klein Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/464140332/complimentary.jpg)
![Calvin Klein Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/464140317/complimentary.jpg)
Calvin Klein
Short Sleeve T-Shirt
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
58% off estimated retail![Koala Baby Boutique Short Sleeve Polo (view 2)](https://cf-assets-thredup.thredup.com/assets/463244471/complimentary.jpg)
![Koala Baby Boutique Short Sleeve Polo (view 1)](https://cf-assets-thredup.thredup.com/assets/463244434/complimentary.jpg)
Koala Baby Boutique
Short Sleeve Polo
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
54% off estimated retail![Baby Gap Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/287882828/complimentary.jpg)
![Baby Gap Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/287882812/complimentary.jpg)
Baby Gap
Long Sleeve Button-Down Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
66% off estimated retail![The Children's Place Outlet Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/457097715/complimentary.jpg)
![The Children's Place Outlet Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/457097577/complimentary.jpg)
The Children's Place Outlet
Short Sleeve Button-Down Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
27% off estimated retail![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/452720198/complimentary.jpg)
![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/452720046/complimentary.jpg)
U.S. Polo Assn.
Short Sleeve Button-Down Shirt
Size 4
$7.99 $4.39 45% off with code GOBIG
76% off estimated retail![Colosseum Athletics Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/443382469/complimentary.jpg)
![Colosseum Athletics Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/443382432/complimentary.jpg)
Colosseum Athletics
Short Sleeve T-Shirt
Size 3-6 mo
$6.99 $3.84 45% off with code GOBIG
53% off estimated retail![George Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/436940678/complimentary.jpg)
![George Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/436940676/complimentary.jpg)
George
Short Sleeve Button-Down Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
18% off estimated retail![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/436946516/complimentary.jpg)
![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/436946466/complimentary.jpg)
U.S. Polo Assn.
Short Sleeve Button-Down Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
76% off estimated retail![Intradeco Apparel Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/435409154/complimentary.jpg)
![Intradeco Apparel Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/435409176/complimentary.jpg)
Intradeco Apparel
Short Sleeve T-Shirt
Size 4
$8.99 $4.94 45% off with code GOBIG
35% off estimated retail![Coogi Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/306045410/complimentary.jpg)
![Coogi Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/306045377/complimentary.jpg)
Coogi
Long Sleeve Button-Down Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
74% off estimated retail![Janie and Jack Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/430085647/complimentary.jpg)
![Janie and Jack Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/430085608/complimentary.jpg)
Janie and Jack
Short Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
62% off estimated retail![Aston Martin Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/424864895/complimentary.jpg)
![Aston Martin Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/424864833/complimentary.jpg)
Aston Martin
Long Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
69% off estimated retail![Boyz Wear By Nannette Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/416109014/complimentary.jpg)
![Boyz Wear By Nannette Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/416108951/complimentary.jpg)
Boyz Wear By Nannette
Long Sleeve Button-Down Shirt
Size 4
$8.99 $4.94 45% off with code GOBIG
75% off estimated retail![Gymboree Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/409144429/complimentary.jpg)
![Gymboree Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/409144418/complimentary.jpg)
Gymboree
Short Sleeve Button-Down Shirt
Size 4
$8.99 $4.94 45% off with code GOBIG
66% off estimated retail![Bit'z Kids Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/378647463/complimentary.jpg)
![Bit'z Kids Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/378647352/complimentary.jpg)
Bit'z Kids
Short Sleeve T-Shirt
Size 3-6 mo
$6.99 $3.84 45% off with code GOBIG
78% off estimated retail![Bit'z Kids Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/378652570/complimentary.jpg)
![Bit'z Kids Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/378652389/complimentary.jpg)
Bit'z Kids
Short Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
72% off estimated retail![Bit'z Kids Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/378652513/complimentary.jpg)
![Bit'z Kids Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/378652435/complimentary.jpg)
Bit'z Kids
Short Sleeve T-Shirt
Size 3-6 mo
$6.99 $3.84 45% off with code GOBIG
78% off estimated retail![Bit'z Kids Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/374272220/complimentary.jpg)
![Bit'z Kids Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/374272174/complimentary.jpg)
Bit'z Kids
Short Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
74% off estimated retail![Bit'z Kids Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/374165448/complimentary.jpg)
![Bit'z Kids Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/374165406/complimentary.jpg)
Bit'z Kids
Short Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
74% off estimated retail![Bit'z Kids Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/374163677/complimentary.jpg)
![Bit'z Kids Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/374163730/complimentary.jpg)
Bit'z Kids
Short Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
74% off estimated retail![Bit'z Kids Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/374165056/complimentary.jpg)
![Bit'z Kids Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/374165021/complimentary.jpg)
Bit'z Kids
Short Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
74% off estimated retail![Bit'z Kids Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/374164748/complimentary.jpg)
![Bit'z Kids Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/374164806/complimentary.jpg)
Bit'z Kids
Short Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
74% off estimated retail![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/363691411/complimentary.jpg)
![U.S. Polo Assn. Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/363691390/complimentary.jpg)
U.S. Polo Assn.
Short Sleeve Button-Down Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
71% off estimated retail![Janie and Jack Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/359415677/complimentary.jpg)
![Janie and Jack Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/359415676/complimentary.jpg)
Janie and Jack
Short Sleeve T-Shirt
Size 3-6 mo
$8.99 $4.94 45% off with code GOBIG
59% off estimated retail![Mini Rotation Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/358039393/complimentary.jpg)
![Mini Rotation Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/358039433/complimentary.jpg)
Mini Rotation
Long Sleeve T-Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
20% off estimated retail![B.T. Kids Short Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/255381242/complimentary.jpg)
![B.T. Kids Short Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/255381230/complimentary.jpg)
B.T. Kids
Short Sleeve Button-Down Shirt
Size 4
$7.99 $4.39 45% off with code GOBIG
38% off estimated retail![H&M Long Sleeve Button-Down Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/254461612/complimentary.jpg)
![H&M Long Sleeve Button-Down Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/254461573/complimentary.jpg)
H&M
Long Sleeve Button-Down Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
46% off estimated retail![First Impressions Short Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/240812143/complimentary.jpg)
![First Impressions Short Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/240812114/complimentary.jpg)
First Impressions
Short Sleeve T-Shirt
Size 3-6 mo
$7.99 $4.39 45% off with code GOBIG
53% off estimated retail![The Children's Boutique Long Sleeve T-Shirt (view 2)](https://cf-assets-thredup.thredup.com/assets/183877821/complimentary.jpg)
![The Children's Boutique Long Sleeve T-Shirt (view 1)](https://cf-assets-thredup.thredup.com/assets/183877839/complimentary.jpg)
The Children's Boutique
Long Sleeve T-Shirt
Size 3-6 mo
$9.99 $5.49 45% off with code GOBIG
50% off estimated retail