Material:The boys swimsuit is made of 82% polyester and 18% spandex.Spandex has good elasticity,enough space for a growing child.Lightweight,breathable,quick dry,4-Way stretch fabrication allows greater mobility in any direction. Boys Swimwear Set Design: The difference between beach shorts and swimming trunks Beach shorts are looser and not suitable for swimming in the water, but swimming trunks are more close-fitting, not only for activities on the beach and land, but also for swimming in the pool or the sea. Two-pieces swimsuit trunk and rash guard for 2-11 years old,Pull on closure.short Sleeve.Dinosaur patterns for boys. About Size:The boys swimwear is thin size,Please check the swimsuit size data on the goods pictures,Due to boys has a different body shape.Please refer to the size data first not the recommended age.If you do not know how to choice it, please choose large size. Occasion: Perfect for swimming, beach, water park, pool, lake, summer vacation, swim lessons, family trips, this cute one-piece swimwear also is a wonderful gift for you girls at any memorable moment. Warm Tips: It is better to wash this swimsuit by hand or washing machine in cold water. Allow to dry naturally, do not bleach. Product content: short-sleeve swimsuit x1, swim trunks x1, swim cap x1