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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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    Super Mario Short Sleeve T-Shirt (view 2)Super Mario Short Sleeve T-Shirt (view 1)
    View Product: Super Mario Short Sleeve T-Shirt

    Super Mario

    Short Sleeve T-Shirt
    Size 4T
    $5.99
    33% off estimated retail
    The Black Dog Long Sleeve T-Shirt (view 2)The Black Dog Long Sleeve T-Shirt (view 1)Flawed Gem
    View Product: The Black Dog Long Sleeve T-Shirt

    The Black Dog

    Long Sleeve T-Shirt
    Size 4T
    $10.99
    38% off estimated retail
    Paper Denim & Cloth Short Sleeve T-Shirt (view 2)Paper Denim & Cloth Short Sleeve T-Shirt (view 1)
    View Product: Paper Denim & Cloth Short Sleeve T-Shirt

    Paper Denim & Cloth

    Short Sleeve T-Shirt
    Size 4T
    $9.99
    44% off estimated retail
    Polo by Ralph Lauren Short Sleeve T-Shirt (view 2)Polo by Ralph Lauren Short Sleeve T-Shirt (view 1)Flawed Gem
    View Product: Polo by Ralph Lauren Short Sleeve T-Shirt

    Polo by Ralph Lauren

    Short Sleeve T-Shirt
    Size 4T
    $13.99
    50% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Instant Message Short Sleeve T-Shirt (view 2)Instant Message Short Sleeve T-Shirt (view 1)
    View Product: Instant Message Short Sleeve T-Shirt

    Instant Message

    Short Sleeve T-Shirt
    Size 4T
    $11.99
    33% off estimated retail
    Polo by Ralph Lauren Short Sleeve T-Shirt (view 2)Polo by Ralph Lauren Short Sleeve T-Shirt (view 1)
    View Product: Polo by Ralph Lauren Short Sleeve T-Shirt

    Polo by Ralph Lauren

    Short Sleeve T-Shirt
    Size 4T
    $11.99
    58% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 4T
    $13.99
    58% off estimated retail
    Adidas Short Sleeve T-Shirt (view 2)Adidas Short Sleeve T-Shirt (view 1)
    View Product: Adidas Short Sleeve T-Shirt

    Adidas

    Short Sleeve T-Shirt
    Size 4T
    $6.99
    65% off estimated retail
    Nike Short Sleeve T-Shirt (view 2)Nike Short Sleeve T-Shirt (view 1)
    View Product: Nike Short Sleeve T-Shirt

    Nike

    Short Sleeve T-Shirt
    Size 4T
    $10.99
    61% off estimated retail
    Little Co. By Lauren Conrad Long Sleeve T-Shirt (view 2)Little Co. By Lauren Conrad Long Sleeve T-Shirt (view 1)
    View Product: Little Co. By Lauren Conrad Long Sleeve T-Shirt

    Little Co. By Lauren Conrad

    Long Sleeve T-Shirt
    Size 4T
    $6.99
    50% off estimated retail
    Nike Short Sleeve T-Shirt (view 2)Nike Short Sleeve T-Shirt (view 1)
    View Product: Nike Short Sleeve T-Shirt

    Nike

    Short Sleeve T-Shirt
    Size 4T
    $12.99
    50% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 4T
    $15.99
    52% off estimated retail
    Tommy Bahama Long Sleeve T-Shirt (view 2)Tommy Bahama Long Sleeve T-Shirt (view 1)
    View Product: Tommy Bahama Long Sleeve T-Shirt

    Tommy Bahama

    Long Sleeve T-Shirt
    Size 4T
    $10.99
    38% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 4T
    $15.99
    52% off estimated retail
    Instant Message Short Sleeve T-Shirt (view 2)Instant Message Short Sleeve T-Shirt (view 1)
    View Product: Instant Message Short Sleeve T-Shirt

    Instant Message

    Short Sleeve T-Shirt
    Size 4T
    $8.99
    50% off estimated retail
    Instant Message Short Sleeve T-Shirt (view 2)Instant Message Short Sleeve T-Shirt (view 1)
    View Product: Instant Message Short Sleeve T-Shirt

    Instant Message

    Short Sleeve T-Shirt
    Size 4T
    $7.99
    55% off estimated retail
    Polo by Ralph Lauren Long Sleeve Henley (view 2)Polo by Ralph Lauren Long Sleeve Henley (view 1)
    View Product: Polo by Ralph Lauren Long Sleeve Henley

    Polo by Ralph Lauren

    Long Sleeve Henley
    Size 4T
    $14.99
    66% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 4T
    $16.99
    50% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 4T
    $16.99
    52% off estimated retail
    Nike Long Sleeve T-Shirt (view 2)Nike Long Sleeve T-Shirt (view 1)
    View Product: Nike Long Sleeve T-Shirt

    Nike

    Long Sleeve T-Shirt
    Size 4T
    $16.99
    55% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 4T
    $15.99
    61% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)New With Tags
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 4T
    $15.99
    61% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 4T
    $13.99
    58% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 4T
    $15.99
    52% off estimated retail
    Puma Short Sleeve T-Shirt (view 2)Puma Short Sleeve T-Shirt (view 1)
    View Product: Puma Short Sleeve T-Shirt

    Puma

    Short Sleeve T-Shirt
    Size 4T
    $8.99
    55% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 4T
    $15.99
    55% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 4T
    $18.99
    52% off estimated retail
    Tommy Bahama Short Sleeve Henley (view 2)Tommy Bahama Short Sleeve Henley (view 1)
    View Product: Tommy Bahama Short Sleeve Henley

    Tommy Bahama

    Short Sleeve Henley
    Size 4T
    $11.99
    67% off estimated retail
    Under Armour Short Sleeve T-Shirt (view 2)Under Armour Short Sleeve T-Shirt (view 1)
    View Product: Under Armour Short Sleeve T-Shirt

    Under Armour

    Short Sleeve T-Shirt
    Size 4T
    $11.99
    52% off estimated retail
    Perry Ellis Long Sleeve T-Shirt (view 2)Perry Ellis Long Sleeve T-Shirt (view 1)
    View Product: Perry Ellis Long Sleeve T-Shirt

    Perry Ellis

    Long Sleeve T-Shirt
    Size 4T
    $10.99
    60% off estimated retail
    Nike Short Sleeve T-Shirt (view 2)Nike Short Sleeve T-Shirt (view 1)
    View Product: Nike Short Sleeve T-Shirt

    Nike

    Short Sleeve T-Shirt
    Size 4T
    $13.99
    50% off estimated retail
    Under Armour Short Sleeve T-Shirt (view 2)Under Armour Short Sleeve T-Shirt (view 1)
    View Product: Under Armour Short Sleeve T-Shirt

    Under Armour

    Short Sleeve T-Shirt
    Size 4T
    $11.99
    52% off estimated retail
    Adidas Short Sleeve T-Shirt (view 2)Adidas Short Sleeve T-Shirt (view 1)
    View Product: Adidas Short Sleeve T-Shirt

    Adidas

    Short Sleeve T-Shirt
    Size 4T
    $12.99
    45% off estimated retail
    Nike Short Sleeve T-Shirt (view 2)Nike Short Sleeve T-Shirt (view 1)
    View Product: Nike Short Sleeve T-Shirt

    Nike

    Short Sleeve T-Shirt
    Size 4T
    $13.99
    50% off estimated retail
    Instant Message Long Sleeve T-Shirt (view 2)Instant Message Long Sleeve T-Shirt (view 1)
    View Product: Instant Message Long Sleeve T-Shirt

    Instant Message

    Long Sleeve T-Shirt
    Size 4T
    $12.99
    38% off estimated retail
    Vineyard Vines Long Sleeve T-Shirt (view 2)Vineyard Vines Long Sleeve T-Shirt (view 1)
    View Product: Vineyard Vines Long Sleeve T-Shirt

    Vineyard Vines

    Long Sleeve T-Shirt
    Size 4T
    $12.99 $9.74 25% off with code HOTDEAL
    47% off estimated retail
    Assorted Brands Long Sleeve Turtleneck (view 2)Assorted Brands Long Sleeve Turtleneck (view 1)
    View Product: Assorted Brands Long Sleeve Turtleneck

    Assorted Brands

    Long Sleeve Turtleneck
    Size 4T
    $8.99 $7.19 20% off with code HOTDEAL
    70% off estimated retail
    Veggie Tales Long Sleeve T-Shirt (view 2)Veggie Tales Long Sleeve T-Shirt (view 1)
    View Product: Veggie Tales Long Sleeve T-Shirt

    Veggie Tales

    Long Sleeve T-Shirt
    Size 4T
    $7.99 $6.39 20% off with code HOTDEAL
    22% off estimated retail
    Old Navy Short Sleeve T-Shirt (view 2)Old Navy Short Sleeve T-Shirt (view 1)
    View Product: Old Navy Short Sleeve T-Shirt

    Old Navy

    Short Sleeve T-Shirt
    Size 4T
    $8.99 $7.19 20% off with code HOTDEAL
    42% off estimated retail
    NFL Active T-Shirt (view 2)NFL Active T-Shirt (view 1)
    View Product: NFL Active T-Shirt

    NFL

    Active T-Shirt
    Size 4T
    $15.99 $12.79 20% off with code HOTDEAL
    68% off estimated retail
    Mud Pie Long Sleeve T-Shirt (view 2)Mud Pie Long Sleeve T-Shirt (view 1)
    View Product: Mud Pie Long Sleeve T-Shirt

    Mud Pie

    Long Sleeve T-Shirt
    Size 4T
    $11.99 $9.59 20% off with code HOTDEAL
    44% off estimated retail
    Old Navy Long Sleeve T-Shirt (view 2)Old Navy Long Sleeve T-Shirt (view 1)Flawed Gem
    View Product: Old Navy Long Sleeve T-Shirt

    Old Navy

    Long Sleeve T-Shirt
    Size 4T
    $12.99 $10.39 20% off with code HOTDEAL
    21% off estimated retail
    Nike Short Sleeve T-Shirt (view 2)Nike Short Sleeve T-Shirt (view 1)
    View Product: Nike Short Sleeve T-Shirt

    Nike

    Short Sleeve T-Shirt
    Size 4T
    $11.99 $9.59 20% off with code HOTDEAL
    53% off estimated retail
    Nike Sleeveless Jersey (view 2)Nike Sleeveless Jersey (view 1)
    View Product: Nike Sleeveless Jersey

    Nike

    Sleeveless Jersey
    Size 4T
    $8.99 $7.19 20% off with code HOTDEAL
    65% off estimated retail
    Reebok Sleeveless Jersey (view 2)Reebok Sleeveless Jersey (view 1)
    View Product: Reebok Sleeveless Jersey

    Reebok

    Sleeveless Jersey
    Size 4T
    $10.99 $8.79 20% off with code HOTDEAL
    60% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)Flawed Gem
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 4T
    $11.99 $9.59 20% off with code HOTDEAL
    61% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 4T
    $17.99 $13.49 25% off with code HOTDEAL
    55% off estimated retail
    Harley Davidson Short Sleeve T-Shirt (view 2)Harley Davidson Short Sleeve T-Shirt (view 1)
    View Product: Harley Davidson Short Sleeve T-Shirt

    Harley Davidson

    Short Sleeve T-Shirt
    Size 4T
    $17.99 $14.39 20% off with code HOTDEAL
    21% off estimated retail
    Assorted Brands Long Sleeve T-Shirt (view 2)Assorted Brands Long Sleeve T-Shirt (view 1)
    View Product: Assorted Brands Long Sleeve T-Shirt

    Assorted Brands

    Long Sleeve T-Shirt
    Size 4T
    $7.99 $6.39 20% off with code HOTDEAL
    61% off estimated retail
    G.H. Bass & Co. Long Sleeve T-Shirt (view 2)G.H. Bass & Co. Long Sleeve T-Shirt (view 1)
    View Product: G.H. Bass & Co. Long Sleeve T-Shirt

    G.H. Bass & Co.

    Long Sleeve T-Shirt
    Size 4T
    $13.99 $11.19 20% off with code HOTDEAL
    52% off estimated retail
    Black Bear Short Sleeve T-Shirt (view 2)Black Bear Short Sleeve T-Shirt (view 1)
    View Product: Black Bear Short Sleeve T-Shirt

    Black Bear

    Short Sleeve T-Shirt
    Size 4T
    $11.99 $9.59 20% off with code HOTDEAL
    38% off estimated retail
    Black Bear Short Sleeve T-Shirt (view 2)Black Bear Short Sleeve T-Shirt (view 1)
    View Product: Black Bear Short Sleeve T-Shirt

    Black Bear

    Short Sleeve T-Shirt
    Size 4T
    $11.99 $9.59 20% off with code HOTDEAL
    38% off estimated retail
    Taty By Tatyana Active T-Shirt (view 2)Taty By Tatyana Active T-Shirt (view 1)
    View Product: Taty By Tatyana Active T-Shirt

    Taty By Tatyana

    Active T-Shirt
    Size 4T
    $24.99 $17.49 30% off with code HOTDEAL
    60% off estimated retail
    Baby Gap Outlet Long Sleeve Henley (view 2)Baby Gap Outlet Long Sleeve Henley (view 1)
    View Product: Baby Gap Outlet Long Sleeve Henley

    Baby Gap Outlet

    Long Sleeve Henley
    Size 4T
    $11.99 $9.59 20% off with code HOTDEAL
    44% off estimated retail
    American Dream Short Sleeve T-Shirt (view 2)American Dream Short Sleeve T-Shirt (view 1)
    View Product: American Dream Short Sleeve T-Shirt

    American Dream

    Short Sleeve T-Shirt
    Size 4T
    $8.99 $7.19 20% off with code HOTDEAL
    11% off estimated retail
    EZPZ Easy Peasy Long Sleeve Henley (view 2)EZPZ Easy Peasy Long Sleeve Henley (view 1)
    View Product: EZPZ Easy Peasy Long Sleeve Henley

    EZPZ Easy Peasy

    Long Sleeve Henley
    Size 4T
    $32.99 $21.44 35% off with code HOTDEAL
    70% off estimated retail
    Crunch Active T-Shirt (view 2)Crunch Active T-Shirt (view 1)
    View Product: Crunch Active T-Shirt

    Crunch

    Active T-Shirt
    Size 4T
    $8.99 $7.19 20% off with code HOTDEAL
    42% off estimated retail
    DKNY Long Sleeve T-Shirt (view 2)DKNY Long Sleeve T-Shirt (view 1)
    View Product: DKNY Long Sleeve T-Shirt

    DKNY

    Long Sleeve T-Shirt
    Size 4T
    $10.99 $8.79 20% off with code HOTDEAL
    56% off estimated retail
    STX Active T-Shirt (view 2)STX Active T-Shirt (view 1)
    View Product: STX Active T-Shirt

    STX

    Active T-Shirt
    Size 4T
    $15.99 $12.79 20% off with code HOTDEAL
    48% off estimated retail
    Old Navy Long Sleeve Henley (view 2)Old Navy Long Sleeve Henley (view 1)
    View Product: Old Navy Long Sleeve Henley

    Old Navy

    Long Sleeve Henley
    Size 4T
    $10.99 $8.79 20% off with code HOTDEAL
    43% off estimated retail
    Members Only Short Sleeve T-Shirt (view 2)Members Only Short Sleeve T-Shirt (view 1)
    View Product: Members Only Short Sleeve T-Shirt

    Members Only

    Short Sleeve T-Shirt
    Size 4T
    $15.99 $11.99 25% off with code HOTDEAL
    63% off estimated retail
    Nike Short Sleeve T-Shirt (view 2)Nike Short Sleeve T-Shirt (view 1)Flawed Gem
    View Product: Nike Short Sleeve T-Shirt

    Nike

    Short Sleeve T-Shirt
    Size 4T
    $8.99 $7.19 20% off with code HOTDEAL
    65% off estimated retail
    Nike Long Sleeve T-Shirt (view 2)Nike Long Sleeve T-Shirt (view 1)
    View Product: Nike Long Sleeve T-Shirt

    Nike

    Long Sleeve T-Shirt
    Size 4T
    $18.99 $13.29 30% off with code HOTDEAL
    58% off estimated retail
    AUTHENTIC CGW SPORTWEAR Thermal Top (view 2)AUTHENTIC CGW SPORTWEAR Thermal Top (view 1)
    View Product: AUTHENTIC CGW SPORTWEAR Thermal Top

    AUTHENTIC CGW SPORTWEAR

    Thermal Top
    Size 4T
    $7.99 $6.39 20% off with code HOTDEAL
    22% off estimated retail
    Ecko Unltd Long Sleeve T-Shirt (view 2)Ecko Unltd Long Sleeve T-Shirt (view 1)
    View Product: Ecko Unltd Long Sleeve T-Shirt

    Ecko Unltd

    Long Sleeve T-Shirt
    Size 4T
    $8.99 $7.19 20% off with code HOTDEAL
    65% off estimated retail
    Epic Threads Short Sleeve T-Shirt (view 2)Epic Threads Short Sleeve T-Shirt (view 1)
    View Product: Epic Threads Short Sleeve T-Shirt

    Epic Threads

    Short Sleeve T-Shirt
    Size 4T
    $13.99 $11.19 20% off with code HOTDEAL
    33% off estimated retail
    Child of Mine by Carter's Long Sleeve T-Shirt (view 2)Child of Mine by Carter's Long Sleeve T-Shirt (view 1)
    View Product: Child of Mine by Carter's Long Sleeve T-Shirt

    Child of Mine by Carter's

    Long Sleeve T-Shirt
    Size 4T
    $10.99 $8.79 20% off with code HOTDEAL
    $9
    Unbranded Long Sleeve T-Shirt (view 2)Unbranded Long Sleeve T-Shirt (view 1)
    View Product: Unbranded Long Sleeve T-Shirt

    Unbranded

    Long Sleeve T-Shirt
    Size 4T
    $11.99 $9.59 20% off with code HOTDEAL
    38% off estimated retail
    Rabbit Skins Short Sleeve T-Shirt (view 2)Rabbit Skins Short Sleeve T-Shirt (view 1)
    View Product: Rabbit Skins Short Sleeve T-Shirt

    Rabbit Skins

    Short Sleeve T-Shirt
    Size 4T
    $8.99 $7.19 20% off with code HOTDEAL
    11% off estimated retail
    Port & Company Short Sleeve T-Shirt (view 2)Port & Company Short Sleeve T-Shirt (view 1)
    View Product: Port & Company Short Sleeve T-Shirt

    Port & Company

    Short Sleeve T-Shirt
    Size 4T
    $10.99 $8.79 20% off with code HOTDEAL
    35% off estimated retail
    Isabel Garreton Long Sleeve T-Shirt (view 2)Isabel Garreton Long Sleeve T-Shirt (view 1)Price Drop
    View Product: Isabel Garreton Long Sleeve T-Shirt

    Isabel Garreton

    Long Sleeve T-Shirt
    Size 4T
    $34.99 $12.25 65% off with code HOTDEAL
    57% off estimated retail
    Egg New York Long Sleeve Henley (view 2)Egg New York Long Sleeve Henley (view 1)Price Drop
    View Product: Egg New York Long Sleeve Henley

    Egg New York

    Long Sleeve Henley
    Size 4T
    $47.99 $21.60 55% off with code HOTDEAL
    73% off estimated retail
    Old Navy Long Sleeve Turtleneck (view 2)Old Navy Long Sleeve Turtleneck (view 1)Price Drop
    View Product: Old Navy Long Sleeve Turtleneck

    Old Navy

    Long Sleeve Turtleneck
    Size 4T
    $10.99 $6.59 40% off with code HOTDEAL
    57% off estimated retail
    Rivalry Threads Short Sleeve T-Shirt (view 2)Rivalry Threads Short Sleeve T-Shirt (view 1)Price Drop
    View Product: Rivalry Threads Short Sleeve T-Shirt

    Rivalry Threads

    Short Sleeve T-Shirt
    Size 4T
    $10.24 $6.14 40% off with code HOTDEAL
    42% off estimated retail
    Q7 athletic Active T-Shirt (view 2)Q7 athletic Active T-Shirt (view 1)Price Drop
    View Product: Q7 athletic Active T-Shirt

    Q7 athletic

    Active T-Shirt
    Size 4T
    $10.99 $6.04 45% off with code HOTDEAL
    63% off estimated retail
    Adidas Short Sleeve T-Shirt (view 2)Adidas Short Sleeve T-Shirt (view 1)
    View Product: Adidas Short Sleeve T-Shirt

    Adidas

    Short Sleeve T-Shirt
    Size 4T
    $10.99 $6.59 40% off with code HOTDEAL
    52% off estimated retail
    Little Giants Short Sleeve T-Shirt (view 2)Little Giants Short Sleeve T-Shirt (view 1)Price Drop
    View Product: Little Giants Short Sleeve T-Shirt

    Little Giants

    Short Sleeve T-Shirt
    Size 4T
    $9.24 $4.62 50% off with code HOTDEAL
    57% off estimated retail
    Well Worn Short Sleeve T-Shirt (view 2)Well Worn Short Sleeve T-Shirt (view 1)Price Drop
    View Product: Well Worn Short Sleeve T-Shirt

    Well Worn

    Short Sleeve T-Shirt
    Size 4T
    $10.24 $6.14 40% off with code HOTDEAL
    61% off estimated retail
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