Happy Swimmies diapers

Say goodbye to single-use swim diapers!

Get 10% discount on your first order, use code NEW25

Our Adjustable Washable Swim Diaper is the smart, sustainable alternative for fun in the sun — whether at the pool, beach, or splash pad.

This clever diaper is designed to grow with your baby: the easy snap system allows a perfect fit from 0 to 3 years. It doesn’t swell in water, dries quickly, and keeps everything where it should be (💩 included!).

Choose from multiple cute designs and make your baby’s next swim safe, stylish, and sustainable. These designs are unisex and they are made of polyester (inner soft mesh).

These diapers are:

🔄 One size fits all – Adjustable snaps fit from newborn to toddler (0–4 years)

🌊 Perfect for pool, beach & holidays – No more soggy disposables

♻️ Washable & reusable – Save money and reduce waste

🧸 Soft & safe – Gentle on sensitive baby skin

💦 Leak-resistant lining – Designed to hold solids, not absorb water

Size & Fit

• Adjustable from approx. 3–16 kg (6.5–32 lbs)
• Use the buttons to change the size 
• Fits newborns, babies & toddlers
• Soft leg elastics for comfort and protection
• Dimensions of insert: 35 cm in length (13.77'') x 13.5 cm in width (5.31'')

Care Instructions

• Rinse after use
• Machine wash at 30°C
• Air dry – do not tumble dry
• Do not wash the diaper together with other clothes
• Tip: Add a little salt in the water when you wash the diapers