The Short Sleeved Kids Rash Vest is a practical, lightweight sun-protection top. The fabric has an UPF50+ treatment and is quick drying with flat seams making it ideal for swimming and playing outdoors, or to wear under a wetsuit. UPF50+ - Fabric has a sun protection factor treatment of 50+Quick Drying - Ideal for wear in and out of the waterStretch Fabric - Soft and comfortableFlat Seams - Combined with the close fit prevents chafing, perfect to wear under a wetsuit or as part of a swimming costume