Size Guide
At Wonsie, we know that comfort starts with the right fit. That’s why our bodysuits are available in a wide range of sizes for children, teens, adults, and the elderly.
How to Choose the Right Bodysuit Size
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Our numbered sizes (ie 4 - 10) are based on general age ranges, but everybody is different, so please refer to the measurements on the size chart.
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If you're unsure, we recommend sizing up, especially for taller individuals or those who wear nappies.
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For the most accurate fit, check our size chart below, paying close attention to the torso length.
Adult & Teen Sizes
Sizes 12/XS through 20/XL are sizes suitable for teens and adults.
Please note: Size 20/XL is quite large and suited for extra tall or broad-bodied adults.
SIZE 22/XXL in some of your favourite styles coming mid 2025!!!
Swimwear
Our swimwear features excellent 4-way stretch.
If you're between sizes, we suggest choosing the smaller size for a snug fit when wet.
Swim Nappies, Bibs & Accessories
Sizing varies by product. Please refer to each product listing for detailed sizing information.
Need a Size Exchange?
No worries! Please refer to our exchange policy or contact us at sales@wonsie.com.au - we’re always happy to assist.