Get a box curated to your kid's exact size, style, and favorite brands — trade in clothes they've outgrown for credit toward it, or just order a box, no trade-in required. Less waste in landfills, less money out of pocket, and a closet that actually keeps up.
Kids outgrow clothes long before they wear out. We keep good pieces in circulation instead of in a landfill.
No listing photos, no haggling, no waiting for a buyer. Mail a bag, get credit — put toward your child's next box.
Our matching engine curates every box around your child's size, style, and the brands you already reach for.
No storefront, no drop-off. A bag comes in, a curated box goes out — straight to your door.
Trading in clothes is optional — skip steps 1 & 2 and go straight to ordering a box if you'd rather.
Fill a small, medium, or large bag with clothes your child has outgrown.
We check what's in good, wearable shape and pay credit based on your bag size — no per-item haggling.
Sizes, favorite styles, and the brands they love — so every box actually fits their life.
Matched to your child, shipped to your door, ready to wear from day one.
Most kids' clothing is retired for one reason: it doesn't fit anymore, not because it's worn out. Buying new, wearing briefly, and setting it aside is expensive for your family and wasteful for the planet.
UpSize keeps good clothing moving — from a kid who's grown out of it to one it fits perfectly — so the value (and the fabric) doesn't go to waste.
This is what our matching engine actually uses to curate your first box — the more specific, the better the fit.
Join the waitlist now and you'll be first in line when trade-ins open — plus a welcome credit toward your first box.