Quick-Drying Fabric: Long lasting Nylon/Spandex blend for durability, reduced water absorption and speed Drawstring: The Boys swim shorts with inner drawstring waist for a secure fit UPF 50+ Sun Protection: Fabric rating UPF 50+ provides excellent protection against ultraviolet rays Performance: Smooth and tight-fitting helps reduce water drag and gives you more freedom and flexibility in the water Active Lifestyle: The boys swim suits are greatfor swim team pratices, swimming competition, swim lessons, training and all kinds of water activities around the pool or beach