Name: Neon Yellow Happy Nappy™
Brand: Splash About
SKU: HNBYS
Price: 17.0 USD
Availability: InStock

Flat lay image of neoprene swim diaper in bright yellow, front.

Flat lay image of neoprene swim diaper in bright yellow, back.

Little one wearing neoprene swim diaper in bright yellow, poolside.

Close up of little one wearing neoprene swim diaper in bright yellow, front.

Little one playing with mum in the pool, wearing neon yellow swim diaper.

Little one swimming with mum in the pool, wearing neon yellow swim diaper.

$17.00

Shipping calculated at checkout.

Size —

Size chart

Happy Nappy™ Size Guide*

Size	Age	Waist (cm / in)	Thigh (cm / in)
XS	Newborn	31 – 36 cm / 12.2 – 14.2 in	15 – 20 cm / 5.9 – 7.9 in
S	0 – 3 months	34 – 41 cm / 13.4 – 16.1 in	17 – 22 cm / 6.7 – 8.7 in
M	3 – 6 months	37 – 44 cm / 14.6 – 17.3 in	19 – 24 cm / 7.5 – 9.4 in
L	6 – 12 months	40 – 47 cm / 15.7 – 18.5 in	20 – 26 cm / 7.9 – 10.2 in
XL	12 – 24 months	42 – 50 cm / 16.5 – 19.7 in	22 – 31 cm / 8.7 – 12.2 in
XXL	2 – 3 years	44 – 52 cm / 17.3 – 20.5 in	26 – 33 cm / 10.2 – 13.0 in
3T	3 – 4 years	48 – 54 cm / 18.9 – 21.3 in	27 – 35 cm / 10.6 – 13.8 in
4T	4 – 5 years	56 – 62 cm / 22.0 – 24.4 in	29 – 37 cm / 11.4 – 14.6 in

*Please check waist and leg measurements and not just age in order to get the best fit.

Small

Medium

Large

X Large

XX Large

In stock, ready to ship
Backordered, shipping soon

Quantity

Multi award winning leak protection swim diaper

Unique patented design for the best protection against solid leaks

Made from super soft Neoprene for a comfortable fit

To be worn with a Diaper Wrap underneath during your Water Babies lessons

Biodegradable Diaper Liners available for easy changing and cleaning

Neoprene with 100% polyester shell. Ribs: 69% nylon, 31% elastane

After each swim, rinse thoroughly in fresh water and allow to air dry naturally away from direct heat or sunlight. Machine washing is only occasionally needed, wash at 30°C (86°F) with a non-bio detergent. Do not tumble dry, iron, or bleach to help keep your Happy Nappy™ performing at its best.

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{"id":46592814088353,"title":"Small","option1":"Small","option2":null,"option3":null,"sku":"HNBYS","requires_shipping":true,"taxable":true,"featured_image":{"id":44191652020385,"product_id":8566557245601,"position":1,"created_at":"2026-06-23T05:45:16-04:00","updated_at":"2026-06-23T05:45:19-04:00","alt":"Flat lay image of neoprene swim diaper in bright yellow, front.","width":1200,"height":1200,"src":"\/\/shop.waterbabiesusa.com\/cdn\/shop\/files\/HNBY-F.jpg?v=1782207919","variant_ids":[46592814088353,46592814121121,46592814153889,46592814186657,46592814219425,46592814252193,46592814284961]},"available":true,"name":"Neon Yellow Happy Nappy™ - Small","public_title":"Small","options":["Small"],"price":1700,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"5065024415303","featured_media":{"alt":"Flat lay image of neoprene swim diaper in bright yellow, front.","id":37048197939361,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/shop.waterbabiesusa.com\/cdn\/shop\/files\/HNBY-F.jpg?v=1782207919"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}

The Happy Nappy™ is an innovative reusable swim diaper designed to provide reliable protection against solid leaks in the water.

Ergonomically designed to move with your baby, it is shaped to support your baby's bottom, while specialized waist and leg ribs fit snugly to create a secure seal that helps prevent solids from leaking into the pool.

Made from high-quality, super-soft 1mm neoprene, the Happy Nappy™ is gentle on delicate skin. With no tight elastic, it moves comfortably with your baby, helping to reduce red marks and chafing.

The Happy Nappy™ is chlorine resistant and designed for repeated use, maintaining its shape and protective fit swim after swim. As a reusable alternative to disposable swim diapers, it offers excellent value while helping to reduce waste.

This bold, sunny Neon Yellow Happy Nappy™ brings a fun, vibrant touch to every swim and makes little ones easy to spot in the water. Featuring bright, high-visibility colors, the neon range is perfect for summer swimming, vacations, and busy recreation centers or aquatic facilities.

Please note that for Water Babies swim lessons, the Happy Nappy™ must be worn as part of the Double Layer Diaper System, with another approved swim diaper underneath.

If you'd prefer a simpler option, we recommend the Happy Nappy DUO™. This all-in-one reusable swim diaper combines the award-winning Happy Nappy™ outer layer with a built-in reusable swim diaper, creating a convenient 2-in-1 solution that can be worn on its own during Water Babies lessons.

Disposable Diaper Liners 100% Biodegradable (Pack of 50)

$10.00

Shipping calculated at checkout.

Designed to be used in conjunction with our Reusable Diaper Wraps, Swim Under Diapers and DUOs, these 100% Biodegradable Diaper Liners are a fantastic eco-friendly solution to complete the Double Layer Diaper System.

These compostable diaper liners provide extra protection during your baby's swimming lessons. And after swimming, in the event of any little accidents, the diaper liner makes changing and cleaning much simpler! Simply remove the Happy Nappy, undo the Diaper Wrap or Under Diaper and dispose of the diaper liner in the compost bin.

Developed by Splash About, these fully biodegradable liners hare fragance and chemical free. Made from super soft bamboo nonwoven material, they are kind to babies' sensitive skin.

Size

One Size

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Neon Yellow Happy Nappy™

Customer Reviews

Disposable Diaper Liners 100% Biodegradable (Pack of 50)

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