The Frog Onesie — oversized green fleece frog onesie for adults, front view
The Frog Onesie — green fleece frog onesie costume for adults
The Frog Onesie — green fleece frog onesie costume for adults
The Frog Onesie worn with a friend — matching frog onesies for couples and groups
The Frog Onesie worn with a friend — matching frog onesies for couples and groups
The Frog Onesie worn with a friend — matching frog onesies for couples and groups

The Frog Onesie

$54.99

Free shippingMix sizes

Sizes run small — pick by height, or open the size guide.

Sizes run small — pick by height, not the letter.

  • S — 4'11″–5'1″ (150–155cm) · 88–110 lb
  • M — 5'1″–5'5″ (155–165cm) · 110–143 lb
  • L — 5'5″–5'9″ (165–175cm) · 143–176 lb
  • XL — 5'9″–6'1″ (175–185cm) · 176–198 lb

Between sizes? Size up.

Arrives in 7–14 days · 30-day returns
Description

Two enormous eyes on top of the hood and a wide, unbothered mouth underneath. The hood holds its shape, so the eyes stay where they're supposed to be.

One colour, and it's the right one.

Fit & fabric

Our full range — the same sizing as the Monster Onesie.

  • S — 4′11″–5′1″ (150–155cm) · 88–110 lb
  • M — 5′1″–5′5″ (155–165cm) · 110–143 lb
  • L — 5′5″–5′9″ (165–175cm) · 143–176 lb
  • XL — 5′9″–6′1″ (175–185cm) · 176–198 lb

Between sizes? Size up. It's meant to swallow you.

Care

Machine wash cold, inside out, gentle cycle. Tumble dry low or hang it up. No bleach, no ironing — it's fleece, it will not forgive you.

Wash it with soft things. Zips and velcro will pill it.

Shipping & returns

Free US shipping on orders over $60. Orders typically arrive within 7–14 days, with tracking from the moment they ship.

30 days to decide. Send it back within 30 days of delivery — no forms, no interrogation, no hard feelings.

in the wild

See it on.

The Frog Onesie worn with a friend — matching frog onesies for couples and groups
The Frog Onesie worn with a friend — matching frog onesies for couples and groups
The Frog Onesie worn with a friend — matching frog onesies for couples and groups

The people have spoken. Mostly in caps.
More monsters

There are others.

See the whole lot →
The Monster Onesie in Swamp Green — oversized big mouth fleece monster onesie, front view The Monster Onesiefrom $54.99 The Bunny Onesie in Marshmallow — oversized coral fleece bunny onesie for adults, front view The Bunny Onesiefrom $59.99 The Fang Onesie in Cream — fleece monster onesie with pointed ears and fangs, front view The Fang Onesiefrom $59.99 The Shark Onesie — two-tone grey fleece shark onesie for adults, front view The Shark Onesiefrom $59.99