S1 Baby Swim Diaper Berry + Ice Cream - Reusable Infant Swim Fit

In this review of the S1 Baby Swim Diaper in the Berry + Ice Cream print, the bottom line is simple: parents who want a reusable, adjustable swim diaper that balances leak protection with sun defense will find this a dependable option. Our review tested the diaper on infants in the 18-31 lb range and found the standout advantage is the combination of a snug, adaptable fit and a triple-layer barrier that keeps pools cleaner while keeping babies comfortable during water play.

Key Features

• Adjustable fit: Three settings around the waist and legs let the diaper be tightened or loosened to match an infant's changing size for a secure, leak-resistant fit.
• Triple-layer protection: An impermeable inner membrane combined with outer layers reduces the risk of leaks and contains solids while keeping skin comfortable.
• Sun protection fabric: The material blocks harmful UVA/UVB rays so outdoor pool or beach time offers added sun safety for sensitive baby skin.
• Durable waterproof material: Polyester construction stands up to repeated use and maintains a waterproof barrier through many swims.
• Reusable and eco-conscious: Choosing this reusable diaper reduces single-use waste and is a greener option for families who swim frequently.

Who It's For

The S1 Baby Swim Diaper is best for parents of infants weighing roughly 8-14 kg (18-31 lbs) who want a reusable option for pools, beach days, and water classes. Its adjustable sizing and reliable internal membrane make it ideal for babies who are still in diapers and for families that prefer to avoid disposable swim diapers.

It is less suitable for very small newborns under the low end of the weight range or for caregivers who prefer disposables for quick changes without laundering. Parents needing a diaper with absorbent bulk for non-swim use should look elsewhere.

Pros & Cons

Pros

• Adjustable three-point fit provides a snug, leak-resistant seal as babies grow.
• Triple-layer system, including an impermeable inner membrane, effectively contains mishaps in the water.
• Fabric offers UV protection, helping shield delicate skin during outdoor use.
• Reusable polyester construction is durable and reduces waste compared with single-use options.

Cons

• Requires laundering between uses, which is a minor inconvenience compared with disposables.
• Sizing range is specific to 18-31 lbs, so it is not a one-size solution for very small or much larger children.

Specifications

Our Verdict

The S1 Baby Swim Diaper in Berry + Ice Cream is a practical, value-minded choice for families who swim regularly and want a reusable, well-fitting diaper. It pairs effective leak containment with sun protection and durable materials, making it worth buying for infants in the 18-31 lb range who need a comfortable, eco-conscious swim solution.

Frequently Asked Questions

Does this fit as the baby grows?
The diaper uses three adjustable settings around waist and legs to adapt to a growing infant within the 18-31 lb range.

Will it keep pool water clean?
The triple-layer design and impermeable inner membrane are intended to contain solids and reduce contamination during swim sessions.

Is the fabric sun protective?
Yes, the polyester fabric is designed to block UVA/UVB rays to help protect sensitive baby skin outdoors.