UPF 50+ sun protection: 86% polyester and 14% spandex; this boys rash guard provides UPF 50+ protection, blocking 98% of UVA and UVB rays. Whether wet or dry, it delivers sun safety and helps reduce the need for sunscreen reapplication. Durable for chlorine and salt water: chlorine and saltwater resistant fabric offers longlasting comfort, helping the garment stay vibrant, soft, and stretchy after repeated swimming. Suitable for children who spend hours in the water. Quick drying and lightweight: low water retention and quickdrying fabric mean the rash guard dries quickly, keeping kids comfortable after swimming and avoiding a heavy, moist feel. Ideal for allday wear in and out of the water. 4way stretch for maximum comfort: elastic memoryfit fabric provides unrestricted motion with a quickdry short sleeve design. Enjoy swimming, running, and playing with no tightness or discomfort. Material and performance highlights: 86% polyester, 14% spandex; UPF 50+ sun protection; 98% UVA/UVB blocked; chlorine and saltwater resistant; quickdry and lightweight; 4way stretch; short sleeve design. Use scenarios: Pool or swim lessons: protects from sun, resists chlorine, and moves with your child during practice. Beach or outdoor water play: shields from sun exposure while staying comfortable during sand and splash activities. Family vacations or water days: versatile for allday wear in and out of the water, easy to layer under a life jacket or swim gear.