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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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43 items
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    Columbia One Piece Snowsuit (view 2)Columbia One Piece Snowsuit (view 1)
    View Product: Columbia One Piece Snowsuit

    Columbia

    One Piece Snowsuit
    Size 3T
    $26.99
    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 3T
    $10.99
    52% 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 3T
    $18.99
    44% off estimated retail
    Nike Short Sleeve Jersey (view 2)Nike Short Sleeve Jersey (view 1)
    View Product: Nike Short Sleeve Jersey

    Nike

    Short Sleeve Jersey
    Size 3T
    $8.99
    60% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    H&M Pullover Hoodie (view 2)H&M Pullover Hoodie (view 1)
    View Product: H&M Pullover Hoodie

    H&M

    Pullover Hoodie
    Size 3T
    $10.99
    15% 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 3T
    $13.99
    58% off estimated retail
    Quiksilver Long Sleeve T-Shirt (view 2)Quiksilver Long Sleeve T-Shirt (view 1)
    View Product: Quiksilver Long Sleeve T-Shirt

    Quiksilver

    Long Sleeve T-Shirt
    Size 3T
    $11.99
    33% off estimated retail
    Janie and Jack Pullover Sweater (view 2)Janie and Jack Pullover Sweater (view 1)
    View Product: Janie and Jack Pullover Sweater

    Janie and Jack

    Pullover Sweater
    Size 3T
    $18.99
    63% off estimated retail
    Rockabilly Baby by Candice Gwinn Short Sleeve Button-Down Shirt (view 2)Rockabilly Baby by Candice Gwinn Short Sleeve Button-Down Shirt (view 1)
    View Product: Rockabilly Baby by Candice Gwinn Short Sleeve Button-Down Shirt

    Rockabilly Baby by Candice Gwinn

    Short Sleeve Button-Down Shirt
    Size 3T
    $9.99
    70% 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 3T
    $18.99
    44% off estimated retail
    Columbia Pullover Hoodie (view 2)Columbia Pullover Hoodie (view 1)
    View Product: Columbia Pullover Hoodie

    Columbia

    Pullover Hoodie
    Size 3T
    $17.99
    50% off estimated retail
    Nike Sweatshirt (view 2)Nike Sweatshirt (view 1)
    View Product: Nike Sweatshirt

    Nike

    Sweatshirt
    Size 3T
    $13.99
    67% off estimated retail
    Vineyard Vines Long Sleeve Button-Down Shirt (view 2)Vineyard Vines Long Sleeve Button-Down Shirt (view 1)
    View Product: Vineyard Vines Long Sleeve Button-Down Shirt

    Vineyard Vines

    Long Sleeve Button-Down Shirt
    Size 3T
    $17.99
    60% off estimated retail
    Burt's Bees Kids Pullover Sweater (view 2)Burt's Bees Kids Pullover Sweater (view 1)
    View Product: Burt's Bees Kids Pullover Sweater

    Burt's Bees Kids

    Pullover Sweater
    Size 3T
    $12.99
    43% off estimated retail
    Carter's Short Sleeve T-Shirt (view 2)Carter's Short Sleeve T-Shirt (view 1)
    View Product: Carter's Short Sleeve T-Shirt

    Carter's

    Short Sleeve T-Shirt
    Size 3T
    $7.99
    60% off estimated retail
    Gap Pullover Sweater (view 2)Gap Pullover Sweater (view 1)
    View Product: Gap Pullover Sweater

    Gap

    Pullover Sweater
    Size 3T
    $17.99
    58% off estimated retail
    Polo by Ralph Lauren Short Sleeve Polo (view 2)Polo by Ralph Lauren Short Sleeve Polo (view 1)
    View Product: Polo by Ralph Lauren Short Sleeve Polo

    Polo by Ralph Lauren

    Short Sleeve Polo
    Size 3T
    $12.99
    69% off estimated retail
    Timberland Sweatshirt (view 2)Timberland Sweatshirt (view 1)
    View Product: Timberland Sweatshirt

    Timberland

    Sweatshirt
    Size 3T
    $22.99
    68% off estimated retail
    H&M Sweatshirt (view 2)H&M Sweatshirt (view 1)New With Tags
    View Product: H&M Sweatshirt

    H&M

    Sweatshirt
    Size 3T
    $12.99 $13
    Hurley Sweatshirt (view 2)Hurley Sweatshirt (view 1)
    View Product: Hurley Sweatshirt

    Hurley

    Sweatshirt
    Size 3T
    $20.99
    61% off estimated retail
    Vintage Havana Pullover Hoodie (view 2)Vintage Havana Pullover Hoodie (view 1)
    View Product: Vintage Havana Pullover Hoodie

    Vintage Havana

    Pullover Hoodie
    Size 3T
    $20.99
    61% off estimated retail
    Nike Sweatshirt (view 2)Nike Sweatshirt (view 1)
    View Product: Nike Sweatshirt

    Nike

    Sweatshirt
    Size 3T
    $18.99
    55% off estimated retail
    Huntington Beach Club Zip Up Hoodie (view 2)Huntington Beach Club Zip Up Hoodie (view 1)
    View Product: Huntington Beach Club Zip Up Hoodie

    Huntington Beach Club

    Zip Up Hoodie
    Size 3T
    $20.99
    61% off estimated retail
    Marvel Short Sleeve T-Shirt (view 2)Marvel Short Sleeve T-Shirt (view 1)
    View Product: Marvel Short Sleeve T-Shirt

    Marvel

    Short Sleeve T-Shirt
    Size 3T
    $11.99
    33% off estimated retail
    Nike Pullover Hoodie (view 2)Nike Pullover Hoodie (view 1)Flawed Gem
    View Product: Nike Pullover Hoodie

    Nike

    Pullover Hoodie
    Size 3T
    $7.99
    85% off estimated retail
    Nike Sweatshirt (view 2)Nike Sweatshirt (view 1)
    View Product: Nike Sweatshirt

    Nike

    Sweatshirt
    Size 3T
    $14.99
    65% off estimated retail
    Sears Short Sleeve T-Shirt (view 2)Sears Short Sleeve T-Shirt (view 1)
    View Product: Sears Short Sleeve T-Shirt

    Sears

    Short Sleeve T-Shirt
    Size 3T
    $7.99
    11% off estimated retail
    Crewcuts Short Sleeve T-Shirt (view 2)Crewcuts Short Sleeve T-Shirt (view 1)
    View Product: Crewcuts Short Sleeve T-Shirt

    Crewcuts

    Short Sleeve T-Shirt
    Size 3T
    $13.99
    48% off estimated retail
    Vintage Havana Pullover Hoodie (view 2)Vintage Havana Pullover Hoodie (view 1)
    View Product: Vintage Havana Pullover Hoodie

    Vintage Havana

    Pullover Hoodie
    Size 3T
    $21.99
    60% off estimated retail
    Champion Sweatshirt (view 2)Champion Sweatshirt (view 1)
    View Product: Champion Sweatshirt

    Champion

    Sweatshirt
    Size 3T
    $16.99
    37% 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 3T
    $18.99
    44% off estimated retail
    Polo by Ralph Lauren Thermal Top (view 2)Polo by Ralph Lauren Thermal Top (view 1)
    View Product: Polo by Ralph Lauren Thermal Top

    Polo by Ralph Lauren

    Thermal Top
    Size 3T
    $6.99
    69% off estimated retail
    Hanna Andersson Pullover Hoodie (view 2)Hanna Andersson Pullover Hoodie (view 1)
    View Product: Hanna Andersson Pullover Hoodie

    Hanna Andersson

    Pullover Hoodie
    Size 3T
    $20.99
    48% off estimated retail
    Little Jacques Long Sleeve Button-Down Shirt (view 2)Little Jacques Long Sleeve Button-Down Shirt (view 1)
    View Product: Little Jacques Long Sleeve Button-Down Shirt

    Little Jacques

    Long Sleeve Button-Down Shirt
    Size 3T
    $7.99
    55% off estimated retail
    Tommy Hilfiger Short Sleeve Polo (view 2)Tommy Hilfiger Short Sleeve Polo (view 1)
    View Product: Tommy Hilfiger Short Sleeve Polo

    Tommy Hilfiger

    Short Sleeve Polo
    Size 3T
    $9.99
    70% off estimated retail
    Marvel Pullover Hoodie (view 2)Marvel Pullover Hoodie (view 1)
    View Product: Marvel Pullover Hoodie

    Marvel

    Pullover Hoodie
    Size 3T
    $13.99
    61% off estimated retail
    Baby Gap Long Sleeve Button-Down Shirt (view 2)Baby Gap Long Sleeve Button-Down Shirt (view 1)
    View Product: Baby Gap Long Sleeve Button-Down Shirt

    Baby Gap

    Long Sleeve Button-Down Shirt
    Size 3T
    $15.99
    40% off estimated retail
    Baby Gap Long Sleeve T-Shirt (view 2)Baby Gap Long Sleeve T-Shirt (view 1)
    View Product: Baby Gap Long Sleeve T-Shirt

    Baby Gap

    Long Sleeve T-Shirt
    Size 3T
    $10.99
    31% off estimated retail
    Puma Active T-Shirt (view 2)Puma Active T-Shirt (view 1)
    View Product: Puma Active T-Shirt

    Puma

    Active T-Shirt
    Size 3T
    $10.99
    59% off estimated retail
    Johnny Cash Pullover Hoodie (view 2)Johnny Cash Pullover Hoodie (view 1)
    View Product: Johnny Cash Pullover Hoodie

    Johnny Cash

    Pullover Hoodie
    Size 3T
    $13.99
    48% off estimated retail
    Kidtopia Pullover Sweater (view 2)Kidtopia Pullover Sweater (view 1)
    View Product: Kidtopia Pullover Sweater

    Kidtopia

    Pullover Sweater
    Size 3T
    $13.99
    39% off estimated retail
    U.S. Polo Assn. Short Sleeve Polo (view 2)U.S. Polo Assn. Short Sleeve Polo (view 1)
    View Product: U.S. Polo Assn. Short Sleeve Polo

    U.S. Polo Assn.

    Short Sleeve Polo
    Size 3T
    $11.99
    55% off estimated retail
    Polo by Ralph Lauren Short Sleeve Polo (view 2)Polo by Ralph Lauren Short Sleeve Polo (view 1)Flawed Gem
    View Product: Polo by Ralph Lauren Short Sleeve Polo

    Polo by Ralph Lauren

    Short Sleeve Polo
    Size 3T
    $12.99
    69% off estimated retail
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