Charlie Banana Reusable Swim Diaper Size M - Snug Waterproof Fit

Our review of the Charlie Banana Reusable Swim Diaper finds it best for parents who want a washable, comfortable option for pool and beach outings with infants and toddlers (recommended for 16-28 lbs.). The single biggest reason to buy is the combination of a snug, adjustable fit and a super-soft inner lining made from plant-derived TENCEL Lyocell, which keeps water play comfortable while helping to contain solids without swelling when wet. It reads and fits like swimwear, so fast changes are possible even with wriggly babies.

Key Features

• Snug Fit: A wide back elastic and leg elastics provide a secure, leak-resistant seal that helps contain solids during water play.
• Adjustable Waist: The elastic drawstring waist makes the diaper easy to pull on and adjust for a customized, comfortable fit during changes.
• Super-Soft Lining: The inner lining is made from plant-based TENCEL Lyocell fibers so only soft materials touch delicate skin.
• Waterproof and Lightweight: The outer fabric is waterproof, breathable, and quick-drying, so the diaper does not swell when wet and allows free movement.
• Durable and Reusable: Designed to be washed and reused, it removes the need for single-use swim diapers and reduces waste.
• Safety Tested: Rigorously tested and certified under STANDARD 100 by OEKO-TEX for low levels of harmful substances.

Who It's For

This swim diaper is ideal for parents of baby girls and boys in the 16-28 lb. range who want a reliable, reusable option for pools, beach days, and swim lessons. It suits caregivers who prefer soft, plant-based fabrics next to their childs skin and value an adjustable, secure fit that mimics regular swimwear for quick changes.

Those who should look elsewhere include families needing a single-use disposable solution for travel or extended outings without washing, and parents seeking sizes outside the M (16-28 lb.) range. If a fully absorbent diaper is required for long dry-time periods, a different product would be better.

Pros & Cons

Pros

• Soft TENCEL Lyocell lining is gentle on sensitive skin and feels comfortable in and out of water.
• Adjustable drawstring and snug elastics create a secure fit that customers say is easy to put on and take off.
• Waterproof, breathable fabric that is lightweight and does not swell when wet, allowing free movement.
• Reusable design reduces waste and includes an environmental donation component.

Cons

• Reusable design requires washing after use, which may be less convenient than disposables for some outings.

Specifications

Brand	CHARLIE BANANA
Size	M (16-28 lbs.)
Inner Lining	Plant-based TENCEL Lyocell fibers
Closure	Elastic drawstring waist
Outer Fabric	Waterproof, breathable, quick-drying fabric
Certification	STANDARD 100 by OEKO-TEX
Care	Reusable and washable

Our Verdict

The Charlie Banana Reusable Swim Diaper in size M is a good value for families who want a comfortable, eco-friendly swim option with a secure, adjustable fit. It performs well at containing solids without swelling, is gentle on delicate skin, and speeds up changes with its swimwear-style drawstring, making it a practical pick for regular pool or beach use.

Frequently Asked Questions

Is this swim diaper machine washable?
Yes, the design is reusable and washable so it can be laundered and used again and again.

Will it swell when wet?
No, the waterproof and quick-drying fabric is lightweight and does not swell when exposed to water.

Does it prevent leaks around the legs?
The wide back elastic and snug leg elastics are designed to provide a secure seal to help contain solids and reduce leaks.