Just Arrived, the All New Thirsties Swim Diapers.

Thirsties Swim Diapers are trim-fitting, comfy, and designed to reliably keep messes contained during fun-filled days at the pool or beach. Reusable swim diapers aren't just a more economical choice than disposables — many families find them more convenient! Plus, our handy side snaps make clean-up quick and easy, so you can spend more time splashing and less time stressing.

See the image carousel for additional sizing information and a product video.

Reusable, dependable, and irresistibly cute
A smarter, more economical choice for frequent splashers compared to disposables.
Slim, trim design and a soft mesh lining keep your little one swimming comfortably and stylishly.
Say goodbye to saggy bottoms — the extra-wide back elastic provides a gentle, secure fit for active babies.
Side snap closures make changes quick and easy.
The fast-drying, waterproof outer paired with a lightweight mesh interior ensures no extra weight to slow your swimmer down.
Offered in four sizes for a perfectly snug, bulk-free fit.
Designed to exceed the swim diaper standards of most public pools.

Made From:

Outer: 100% polyester with waterproof TPU laminate
Inner: 100% polyester

FREE of VOC’s, PVC, phthalates, PFAS, latex, and lead.

Care and Use:

For those managing cloth diaper laundry, the most efficient method is to wash your Swim Diapers together with your cloth diapers. When the Swim Diaper is not heavily soiled, it can also be laundered with your standard clothing load without issue.

Cloth diaper washing instructions:

01. Wash on a Quick Wash cycle on warm with detergent to ‘pre-wash’ your Thirsties.

02. Add more detergent and wash with hot water on a Heavy-Duty Cycle with an extra rinse. Add washing soda or Calgon if you have very hard water.

03. Hang dry in the sun whenever and wherever possible. Alternatively, dry in dryer on medium-high heat for about 60-75 minutes until fully dry. Add dryer balls for quicker drying.

Swim Diapers

Thirsties Swim Diaper (Original Version)

Thirsties Swim Diaper - Summer 2025 Version