Size Guide
Welcome to our Size Guide! Finding the perfect fit can make all the difference, and we’re here to help you choose the size that’s just right for you or your little one. Our comprehensive sizing chart not only provides detailed measurements but also offers guidance on how each product should fit, ensuring you get the best comfort and style.
Happy Nappy Products
Happy Nappy™
Happy Nappy Size Guide
| Size | Waist | Thigh |
| Small - 0-3 Months | 34-41cm | 17-22cm |
| Medium- 3-6 Months | 37-44cm | 19-24cm |
| Large 6-12 Months | 40-47cm | 20-26cm |
| X Large - 12-24 Months | 42-50cm | 22-31cm |
| XX Large - 2-3 Years | 44-52cm | 26-33cm |
| 3-4 Years | 48-54cm | 27-35cm |
| 4-5 Years | 56-62cm | 29-37cm |
To ensure a good fit the waist and leg bands should be a snug fit without any gaping to prevent leaks. Our products are manufactured to provide maximum comfort and performance. As children and especially babies vary so much in size, it is important to ensure you have the right fit for your child.
Happy Nappy Duo™
Happy Nappy Duo Size Guide
| Size | Waist | Thigh |
| Small - 0-3 Months | 34-41cm | 17-22cm |
| Medium- 3-6 Months | 37-44cm | 19-24cm |
| Large 6-12 Months | 40-47cm | 20-26cm |
| X Large - 12-24 Months | 42-50cm | 22-31cm |
| XX Large - 2-3 Years | 44-52cm | 26-33cm |
| 3-4 Years | 48-54cm | 27-35cm |
| 4-5 Years | 56-62cm | 29-37cm |
To ensure a good fit the waist and leg bands should be a snug fit without any gaping to prevent leaks. Our products are manufactured to provide maximum comfort and performance. As children and especially babies vary so much in size, it is important to ensure you have the right fit for your child.
Happy Nappy Swimsuit™
Happy Nappy Swimsuit Size Guide
| Size | Waist | Thigh | Chest | HPS*-Crotch |
| 0-4m | 34-41cm | 17-22cm | 41-48cm | 32-35cm |
| 3-8m | 37-44cm | 19-24cm | 46-50cm | 40-43cm |
| 6-14m | 40-47cm | 20-26cm | 48-54cm | 44-47cm |
| 12-24m | 42-50cm | 22-31cm | 52-56cm | 48-51cm |
| 2-3y | 44-52cm | 26-33cm | 54-60cm | 52-55cm |
Our Happy Nappy™ Swimsuit relies on a correct fit to ensure complete leak protection. Children, babies in particular, vary in size and do not always fit into a standard clothing range. It is essential you measure your baby correctly and use the size guide to ensure a snug fit around the waist and thighs when buying the Happy Nappy™ Swimsuit.
* HPS - High point of shoulder to crotch measurement.
Happy Nappy Sunsuit™
| Size | Waist | Thigh | Chest | HPS*- Crotch |
| Small 0-4m | 36-42cm | 18-24cm | 40-44cm | 32-35cm |
| Medium 3-8m | 40-46cm | 20-26cm | 44-48cm | 35-38cm |
| Large 6-4m | 43-47cm | 22-28cm | 48-52cm | 39-42cm |
| X Large 12-24m | 45-51cm | 24-30cm | 50-54cm | 42-44cm |
Our Happy Nappy™ Sunsuit relies on a correct fit to ensure complete leak protection. Children, babies in particular, vary in size and do not always fit into a standard clothing range. It is essential you measure your baby correctly and use the size guide to ensure a snug fit around the waist and thighs when buying the Happy Nappy™ Sunsuit.
HPS* - High point of shoulder to crotch
Happy Nappy Wetsuit™
| Size | Waist | Thigh | Chest | HPS*- Crotch |
| Small 0-4m | 36-42cm | 18-24cm | 40-44cm | 32-35cm |
| Medium 3-8m | 40-46cm | 20-26cm | 44-48cm | 35-38cm |
| Large 6-4m | 43-47cm | 22-28cm | 48-52cm | 39-42cm |
| X Large 12-24m | 45-51cm | 24-30cm | 50-54cm | 42-44cm |
Our Happy Nappy™ Wetsuit relies on a correct fit to ensure complete leak protection. Children, babies in particular, vary in size and do not always fit into a standard clothing range. It is essential you measure your baby correctly and use the size guide to ensure a snug fit around the waist and thighs when buying the Happy Nappy™ Wetsuit.
HPS* - High point of shoulder to crotch
Silver Lining Nappy Wrap
Silver Lining Nappy Wrap Size Guide
| Size | Waist | Thigh | Length |
| Small - 0-6 Months | 42cm | 8.5-14cm | 19cm |
| Medium- 6-24 Months | 44cm | 11-17cm | 20cm |
| Large 2-3 Years | 50cm | 13-18cm | 21cm |
| X Large - 3-4 Years | 52cm | 13.5-18cm | 24.5cm |
| XX Large - 4-5 Years | 59cm | 14.5-18.5cm | 26.5cm |
The Silver-Lining Nappy Wrap is a pull-on nappy featuring elasticated waist and leg openings. As a result, it accommodates a larger size range than the Happy Nappy™ it is designed to be worn underneath.
Splash Jammer Products
Toddler Splash Jammers
Toddler Splash Jammers Size Guide
| Size | Waist | Thigh | Length |
| 2-3 Years | 44-52cm | 24-30cm | 25cm |
| 3-4 Years | 46-54cm | 26-32cm | 26cm |
Our Splash Jammers rely on a correct fit to provide complete leak protection. Children vary in size and do not always fit into standard clothing ranges, so it is essential to measure your child accurately and use the size guide to ensure a snug fit around the waist and thighs when purchasing Splash Jammers.
Jammer Wetsuits
Jammer Wetsuit Size Guide
| Size | Waist | Thigh | HPS* - Crotch |
| 2-3 Years | 44-52cm | 26-34cm | 38cm |
| 3-4 Years | 48-60cm | 28-36cm | 42cm |
The Splash Jammers within the Jammer Wetsuit rely on a proper fit to provide complete leak protection. Since children vary in size and do not always fit into standard clothing ranges, it is essential to measure your child accurately and use the size guide to ensure a snug fit around the waist and thighs when purchasing. The shoulder straps can be adjusted to fit the body length.
Splash Jammer Duo™
Splash Jammers Duo Size Guide
| Size | Waist | Thigh | Length |
| 2-3 Years | 44-52cm | 24-30cm | 25cm |
| 3-4 Years | 46-54cm | 26-32cm | 26cm |
| 4-5 Years | |||
| 5-6 Years |
Our Splash Jammer Duo™ relies on a correct fit to provide complete leak protection. Children vary in size and do not always fit into standard clothing ranges, so it is essential to measure your child accurately and use the size guide to ensure a snug fit around the waist and thighs when purchasing.
Baby Wetsuits
Baby Wrap Wetsuit
Baby Wrap Size Guide
| Size | Chest | HPS* to Crotch |
| Small 0-6 Months | 42-44cm | 35-39cm |
| Medium 6-18 Months | 44-51cm | 40-44cm |
| Large 18-30 Months | 51-58cm | 42-46cm |
Warm In One Wetsuit
Warm In One Size Guide
| Size | Chest | HPS * Crotch | Length |
| Small 0-3 Months | 50-54cm | 30-33cm | 48cm |
| Medium 3-6 Months | 52-56cm | 33-35cm | 51cm |
| Large 6-12 Months | 56-60cm | 37-39cm | 54cm |
| X Large 12-24 Months | 60-64cm | 40-43cm | 60cm |
The Warm in One is designed for a looser fit and can be worn oversized. To ensure the best fit for your baby, measure diagonally from the top of their shoulder to the crotch and around the circumference of their chest.
HPS* - High point of shoulder to crotch measurement.
Happy Nappy Wetsuit™
| Size | Waist | Thigh | Chest | HPS*- Crotch |
| Small 0-4m | 36-42cm | 18-24cm | 40-44cm | 32-35cm |
| Medium 3-8m | 40-46cm | 20-26cm | 44-48cm | 35-38cm |
| Large 6-4m | 43-47cm | 22-28cm | 48-52cm | 39-42cm |
| X Large 12-24m | 45-51cm | 24-30cm | 50-54cm | 42-44cm |
Our Happy Nappy™ Wetsuit relies on a correct fit to ensure complete leak protection. Children, babies in particular, vary in size and do not always fit into a standard clothing range. It is essential you measure your baby correctly and use the size guide to ensure a snug fit around the waist and thighs when buying the Happy Nappy™ Wetsuit.
HPS* - High point of shoulder to crotch
Thermaswim
Baby & Toddler Thermaswim
Baby & Toddler Thermaswim One- Piece Size Guide
Baby Thermaswim
| Size | Chest | Body |
| Small 3-6 Months | 40-44cm | 55cm |
| Medium 6-12 Months | 44-48cm | 61cm |
| Large 12-24 Months | 48-50cm | 67cm |
Toddler Thermaswim
| Size | Chest | Body |
| 2-4 Years | 50-52cm | 60cm |
| 4-6 Years | 52-54cm | 64cm |
Thermaswim products are designed to be slim-fitting to help reduce drag in the water. You may allow some room for growth without compromising the benefits it provides
Kids Wetsuits
UV Sun & Sea Wetsuit
| Size | Chest | HPS*- Crotch | Length |
| 1-2 Years | 50-54cm | 40-42cm | 60cm |
| 2-4 Years | 54-56cm | 42-44cm | 61cm |
| 4-6 Years | 56-60cm | 44-46cm | 62cm |
The UV Sun & Sea Suit is a shorty style designed to be slim-fitting to reduce drag in the water, but you can allow some room for growth without compromising its benefits.
HPS* - High point of shoulder to crotch
Jammer Wetsuits
Jammer Wetsuit Size Guide
| Size | Waist | Thigh | HPS* - Crotch |
| 2-3 Years | 44-52cm | 26-34cm | 38cm |
| 3-4 Years | 48-60cm | 28-36cm | 42cm |
The Splash Jammers within the Jammer Wetsuit rely on a proper fit to provide complete leak protection. Since children vary in size and do not always fit into standard clothing ranges, it is essential to measure your child accurately and use the size guide to ensure a snug fit around the waist and thighs when purchasing. The shoulder straps can be adjusted to fit the body length.
Kids Incontinence
Kids Jammers
| Size | Waist | Thigh | Length |
| 4-5 Years | 48-56cm | 28-34cm | 25cm |
| 5-6 Years | 50-58cm | 30-36cm | 27cm |
| 6-7 Years | 52-60cm | 32-38cm | 30cm |
| 7-8 Years | 54-62cm | 34-40cm | 32cm |
Adult Jammers
| Size | Waist | Thigh |
Length |
| X Small | 56-68cm | 35-43cm | 38cm |
| Small | 62-70cm | 40-47cm | 40cm |
| Medium | 68-78cm | 43-51cm | 42cm |
| Large | 76-80cm | 47-55cm | 44cm |
| X Large | 88-104cm | 50-60cm | 46cm |
Our Splash Jammers provide complete leak protection when fitted correctly. The waistband and silicone thigh seals should fit snugly against the body. We highly recommend measuring the waist and thighs to ensure you select the correct size for the best fit.
Splash Shorts
Kids Splash Shorts
| Size | Waist | Thigh |
| 4-6 Years | 50-70cm | 30-40cm |
| 6-8 Years | 55-75cm | 40-50cm |
| 8-10 Years | 60-80cm | 50-55cm |
Adults Splash Shorts
| Size | Waist | Thigh |
| Small | 66-86cm | 50-60cm |
| Medium | 74-94cm | 54-64cm |
| Large | 80-100cm | 60-70cm |
| X Large | 90-116cm | 64-74cm |
Our Splash Shorts provide complete leak protection when fitted correctly. The waist and thigh bands should fit snugly against the body. We highly recommend measuring the waist and thighs to ensure you select the correct size for the best fit.
Adult Swimwear
Adult Thermaswim
Adult Thermaswim Top Size Guide
| Size | Chest |
| X Small/ Small | 86-94cm |
| Medium/Large | 96.5-101cm |
| Large/X Large | 104-112cm |
| XX Large | 114+cm |
The Thermaswim top is designed to be slim-fitting to reduce drag in the water, but it can be worn slightly oversized without compromising its warmth benefits
Adult Jammers
| Size | Waist | Thigh | Length |
| 4-5 Years | 48-56cm | 28-34cm | 25cm |
| 5-6 Years | 50-58cm | 30-36cm | 27cm |
| 6-7 Years | 52-60cm | 32-38cm | 30cm |
| 7-8 Years | 54-62cm | 34-40cm | 32cm |
Adult Jammers
| Size | Waist | Thigh |
Length |
| X Small | 56-68cm | 35-43cm | 38cm |
| Small | 62-70cm | 40-47cm | 40cm |
| Medium | 68-78cm | 43-51cm | 42cm |
| Large | 76-80cm | 47-55cm | 44cm |
| X Large | 88-104cm | 50-60cm | 46cm |
Our Splash Jammers provide complete leak protection when fitted correctly. The waistband and silicone thigh seals should fit snugly against the body. We highly recommend measuring the waist and thighs to ensure you select the correct size for the best fit.
Adult Jammer Shorts
| Size | Waist | Thigh |
| Small | 58-68cm | 44-54cm |
| Medium | 66-76cm | 50-60cm |
| Large | 74-84cm | 54-64cm |
| X Large | 82-92cm | 58-68cm |
| XX Large | 88-98cm | 62-72cm |
Our Jammers provide complete leak protection when fitted correctly. The waist and thigh bands on the inner pant should fit snugly against the body. We highly recommend measuring the waist and thighs to ensure you select the correct size for the best fit.
Adult Splash Shorts
Kids Splash Shorts
| Size | Waist | Thigh |
| 4-6 Years | 50-70cm | 30-40cm |
| 6-8 Years | 55-75cm | 40-50cm |
| 8-10 Years | 60-80cm | 50-55cm |
Adults Splash Shorts
| Size | Waist | Thigh |
| Small | 66-86cm | 50-60cm |
| Medium | 74-94cm | 54-64cm |
| Large | 80-100cm | 60-70cm |
| X Large | 90-116cm | 64-74cm |
Our Splash Shorts provide complete leak protection when fitted correctly. The waist and thigh bands should fit snugly against the body. We highly recommend measuring the waist and thighs to ensure you select the correct size for the best fit.
Accessories
Sun Hat
Legionnaire Sun Hat Size Guide
| Size | Dimensions |
| 1-3 Years | 38-48cm |
| 3-6 Years | 48-54cm |
The Legionnaire Hat is elasticated to provide a comfortable fit across the age ranges provided.