Please check sizing carefully. Due to sanitary reasons we will not be accepting returns/exchanges on swimwear. Lightweight ribbed swim fabric Contrasting straps and waistband Gathered strap details High-waisted bottom with elastic waist Top: partially lined | Bottoms: fully-lined 85% nylon 15% spandex Lining 100% polyester Sizing: The best way to find correct sizing is to choose a similar item (preferably swim) that fits your child well and measure that piece laid flat. Then compare them to our measurements. Keep in mind swim fabric has stretch but also becomes looser when in the water. We designed our swim to fit snug. Made in China