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For rough and tumble play, boys' casual pants keep kids comfortable so they can focus on being with their friends. At thredUP, find the kinds of casual pants boys love at a price you'll adore up to 90% off estimated retail.

CasualRemove filter3TRemove filter3-6 moRemove filter
48 items
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    Polo by Ralph Lauren Khakis (view 2)Polo by Ralph Lauren Khakis (view 1)
    View Product: Polo by Ralph Lauren Khakis

    Polo by Ralph Lauren

    Khakis
    Size 3T
    $12.99
    72% off estimated retail
    Hanna Andersson Casual Pants (view 2)Hanna Andersson Casual Pants (view 1)
    View Product: Hanna Andersson Casual Pants

    Hanna Andersson

    Casual Pants
    Size 3-6 mo
    $15.99
    46% off estimated retail
    Baby Gear Casual Pants (view 2)Baby Gear Casual Pants (view 1)
    View Product: Baby Gear Casual Pants

    Baby Gear

    Casual Pants
    Size 3-6 mo
    $6.99 $5.59 20% off with code THANKU
    53% off estimated retail
    Little Green Trike Casual Pants (view 2)Little Green Trike Casual Pants (view 1)
    View Product: Little Green Trike Casual Pants

    Little Green Trike

    Casual Pants
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    69% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    H&M Casual Pants (view 2)H&M Casual Pants (view 1)
    View Product: H&M Casual Pants

    H&M

    Casual Pants
    Size 3-6 mo
    $12.99 $10.39 20% off with code THANKU
    40% off estimated retail
    Zara Baby Casual Pants (view 2)Zara Baby Casual Pants (view 1)
    View Product: Zara Baby Casual Pants

    Zara Baby

    Casual Pants
    Size 3-6 mo
    $13.99 $11.19 20% off with code THANKU
    51% off estimated retail
    Hanna Andersson Casual Pants (view 2)Hanna Andersson Casual Pants (view 1)
    View Product: Hanna Andersson Casual Pants

    Hanna Andersson

    Casual Pants
    Size 3-6 mo
    $13.99 $11.19 20% off with code THANKU
    53% off estimated retail
    Hanna Andersson Casual Pants (view 2)Hanna Andersson Casual Pants (view 1)
    View Product: Hanna Andersson Casual Pants

    Hanna Andersson

    Casual Pants
    Size 3-6 mo
    $17.99 $14.39 20% off with code THANKU
    40% off estimated retail
    Olive + Scout Casual Pants (view 2)Olive + Scout Casual Pants (view 1)
    View Product: Olive + Scout Casual Pants

    Olive + Scout

    Casual Pants
    Size 3-6 mo
    $14.99 $9.74 35% off with code THANKU
    58% off estimated retail
    Janie and Jack Casual Pants (view 2)Janie and Jack Casual Pants (view 1)
    View Product: Janie and Jack Casual Pants

    Janie and Jack

    Casual Pants
    Size 3-6 mo
    $10.99 $8.79 20% off with code THANKU
    69% off estimated retail
    Hanna Andersson Cargo Pants (view 2)Hanna Andersson Cargo Pants (view 1)
    View Product: Hanna Andersson Cargo Pants

    Hanna Andersson

    Cargo Pants
    Size 3-6 mo
    $17.99 $14.39 20% off with code THANKU
    56% off estimated retail
    Hanna Andersson Casual Pants (view 2)Hanna Andersson Casual Pants (view 1)
    View Product: Hanna Andersson Casual Pants

    Hanna Andersson

    Casual Pants
    Size 3-6 mo
    $15.99 $12.79 20% off with code THANKU
    46% off estimated retail
    Hanna Andersson Casual Pants (view 2)Hanna Andersson Casual Pants (view 1)
    View Product: Hanna Andersson Casual Pants

    Hanna Andersson

    Casual Pants
    Size 3-6 mo
    $19.99 $14.99 25% off with code THANKU
    33% off estimated retail
    Dunnes Casual Pants (view 2)Dunnes Casual Pants (view 1)
    View Product: Dunnes Casual Pants

    Dunnes

    Casual Pants
    Size 3-6 mo
    $7.99 $6.39 20% off with code THANKU
    46% off estimated retail
    Tender Kisses Casual Pants (view 2)Tender Kisses Casual Pants (view 1)
    View Product: Tender Kisses Casual Pants

    Tender Kisses

    Casual Pants
    Size 3-6 mo
    $9.99 $7.49 25% off with code THANKU
    33% off estimated retail
    Tea Cargo Pants (view 2)Tea Cargo Pants (view 1)Price Drop
    View Product: Tea Cargo Pants

    Tea

    Cargo Pants
    Size 3-6 mo
    $18.99 $15.19 20% off with code THANKU
    57% off estimated retail
    Hanes Casual Pants (view 2)Hanes Casual Pants (view 1)Price Drop
    View Product: Hanes Casual Pants

    Hanes

    Casual Pants
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    40% off estimated retail
    Assorted Brands Casual Pants (view 2)Assorted Brands Casual Pants (view 1)Price Drop
    View Product: Assorted Brands Casual Pants

    Assorted Brands

    Casual Pants
    Size 3-6 mo
    $9.99 $7.99 20% off with code THANKU
    65% off estimated retail
    Brooks Fitch Casual Pants (view 2)Brooks Fitch Casual Pants (view 1)Price Drop
    View Product: Brooks Fitch Casual Pants

    Brooks Fitch

    Casual Pants
    Size 3-6 mo
    $9.99 $7.49 25% off with code THANKU
    33% off estimated retail
    Tender Kisses Casual Pants (view 2)Tender Kisses Casual Pants (view 1)Price Drop
    View Product: Tender Kisses Casual Pants

    Tender Kisses

    Casual Pants
    Size 3-6 mo
    $6.99 $5.59 20% off with code THANKU
    53% off estimated retail
    M Baby Boy Casual Pants (view 2)M Baby Boy Casual Pants (view 1)Price Drop
    View Product: M Baby Boy Casual Pants

    M Baby Boy

    Casual Pants
    Size 3-6 mo
    $8.99 $6.74 25% off with code THANKU
    40% off estimated retail
    Cloud Island Casual Pants (view 2)Cloud Island Casual Pants (view 1)
    View Product: Cloud Island Casual Pants

    Cloud Island

    Casual Pants
    Size 3-6 mo
    $6.99
    53% off estimated retail
    St. Patricks Day Cargo Pants (view 2)St. Patricks Day Cargo Pants (view 1)Price Drop
    View Product: St. Patricks Day Cargo Pants

    St. Patricks Day

    Cargo Pants
    Size 3-6 mo
    $9.99 $6.99 30% off with code THANKU
    33% off estimated retail
    Mud Pie Casual Pants (view 2)Mud Pie Casual Pants (view 1)Price Drop
    View Product: Mud Pie Casual Pants

    Mud Pie

    Casual Pants
    Size 3-6 mo
    $10.99 $8.79 20% off with code THANKU
    62% off estimated retail
    Assorted Brands Casual Pants (view 2)Assorted Brands Casual Pants (view 1)Price Drop
    View Product: Assorted Brands Casual Pants

    Assorted Brands

    Casual Pants
    Size 3-6 mo
    $9.99 $7.99 20% off with code THANKU
    65% off estimated retail
    Luvable Friends Casual Pants (view 2)Luvable Friends Casual Pants (view 1)Price Drop
    View Product: Luvable Friends Casual Pants

    Luvable Friends

    Casual Pants
    Size 3-6 mo
    $9.99 $7.99 20% off with code THANKU
    33% off estimated retail
    Assorted Brands Casual Pants (view 2)Assorted Brands Casual Pants (view 1)Price Drop
    View Product: Assorted Brands Casual Pants

    Assorted Brands

    Casual Pants
    Size 3-6 mo
    $10.99 $8.79 20% off with code THANKU
    62% off estimated retail
    Chick Pea Cargo Pants (view 2)Chick Pea Cargo Pants (view 1)Price Drop
    View Product: Chick Pea Cargo Pants

    Chick Pea

    Cargo Pants
    Size 3-6 mo
    $9.99 $7.99 20% off with code THANKU
    33% off estimated retail
    Seed Casual Pants (view 2)Seed Casual Pants (view 1)Price Drop
    View Product: Seed Casual Pants

    Seed

    Casual Pants
    Size 3-6 mo
    $9.99 $7.99 20% off with code THANKU
    77% off estimated retail
    Timberland Casual Pants (view 2)Timberland Casual Pants (view 1)Price Drop
    View Product: Timberland Casual Pants

    Timberland

    Casual Pants
    Size 3-6 mo
    $9.99 $7.99 20% off with code THANKU
    82% off estimated retail
    Swiggles Casual Pants (view 2)Swiggles Casual Pants (view 1)Price Drop
    View Product: Swiggles Casual Pants

    Swiggles

    Casual Pants
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    59% off estimated retail
    Rae Dunn Casual Pants (view 2)Rae Dunn Casual Pants (view 1)Price Drop
    View Product: Rae Dunn Casual Pants

    Rae Dunn

    Casual Pants
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    59% off estimated retail
    Rae Dunn Casual Pants (view 2)Rae Dunn Casual Pants (view 1)Price Drop
    View Product: Rae Dunn Casual Pants

    Rae Dunn

    Casual Pants
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    59% off estimated retail
    Garanimals Casual Pants (view 2)Garanimals Casual Pants (view 1)Price Drop
    View Product: Garanimals Casual Pants

    Garanimals

    Casual Pants
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    40% off estimated retail
    Taggies Casual Pants (view 2)Taggies Casual Pants (view 1)Price Drop
    View Product: Taggies Casual Pants

    Taggies

    Casual Pants
    Size 3-6 mo
    $6.99 $5.59 20% off with code THANKU
    53% off estimated retail
    Fisher Price Casual Pants (view 2)Fisher Price Casual Pants (view 1)Price Drop
    View Product: Fisher Price Casual Pants

    Fisher Price

    Casual Pants
    Size 3-6 mo
    $9.99 $7.99 20% off with code THANKU
    33% off estimated retail
    Old Navy Casual Pants (view 2)Old Navy Casual Pants (view 1)Price Drop
    View Product: Old Navy Casual Pants

    Old Navy

    Casual Pants
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    43% off estimated retail
    Assorted Brands Casual Pants (view 2)Assorted Brands Casual Pants (view 1)Price Drop
    View Product: Assorted Brands Casual Pants

    Assorted Brands

    Casual Pants
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    69% off estimated retail
    Assorted Brands Casual Pants (view 2)Assorted Brands Casual Pants (view 1)Price Drop
    View Product: Assorted Brands Casual Pants

    Assorted Brands

    Casual Pants
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    69% off estimated retail
    Old Navy Casual Pants (view 2)Old Navy Casual Pants (view 1)Price Drop
    View Product: Old Navy Casual Pants

    Old Navy

    Casual Pants
    Size 3-6 mo
    $7.99 $6.39 20% off with code THANKU
    50% off estimated retail
    Old Navy Casual Pants (view 2)Old Navy Casual Pants (view 1)Price Drop
    View Product: Old Navy Casual Pants

    Old Navy

    Casual Pants
    Size 3-6 mo
    $9.99 $7.99 20% off with code THANKU
    37% off estimated retail
    Elie Tahari Casual Pants (view 2)Elie Tahari Casual Pants (view 1)Price Drop
    View Product: Elie Tahari Casual Pants

    Elie Tahari

    Casual Pants
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    75% off estimated retail
    Beatrix Potter for Baby Gap Casual Pants (view 2)Beatrix Potter for Baby Gap Casual Pants (view 1)Price Drop
    View Product: Beatrix Potter for Baby Gap Casual Pants

    Beatrix Potter for Baby Gap

    Casual Pants
    Size 3-6 mo
    $8.99 $6.74 25% off with code THANKU
    66% off estimated retail
    Fisher Price Casual Pants (view 2)Fisher Price Casual Pants (view 1)Price Drop
    View Product: Fisher Price Casual Pants

    Fisher Price

    Casual Pants
    Size 3-6 mo
    $7.99 $6.39 20% off with code THANKU
    42% off estimated retail
    Child of Mine by Carter's Casual Pants (view 2)Child of Mine by Carter's Casual Pants (view 1)Price Drop
    View Product: Child of Mine by Carter's Casual Pants

    Child of Mine by Carter's

    Casual Pants
    Size 3-6 mo
    $7.99 $6.39 20% off with code THANKU
    42% off estimated retail
    Lucky Casual Pants (view 2)Lucky Casual Pants (view 1)Price Drop
    View Product: Lucky Casual Pants

    Lucky

    Casual Pants
    Size 3-6 mo
    $13.99 $9.09 35% off with code THANKU
    58% off estimated retail
    Yoga Sprout Casual Pants (view 2)Yoga Sprout Casual Pants (view 1)Price Drop
    View Product: Yoga Sprout Casual Pants

    Yoga Sprout

    Casual Pants
    Size 3-6 mo
    $7.99 $6.39 20% off with code THANKU
    42% off estimated retail
    Carter's Casual Pants (view 2)Carter's Casual Pants (view 1)Price Drop
    View Product: Carter's Casual Pants

    Carter's

    Casual Pants
    Size 3-6 mo
    $7.99 $6.39 20% off with code THANKU
    70% off estimated retail
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