Exclusive UV Block fabric with UPF 50+ protective fabric features more body coverage for greater sun protection. -Featuring fabric goes strong after 200 continuous hours exposure in the water environment and 30% more resistant to fiber breakage. Good Stretch and Flatlock Seams offer Chafe-free comfort and great shape retention. -Stretchy polyester, Low water absorption, Quick-drying, UV protection, Lightweight, Breathable, Durable, Colorfast. -Occasion:Perfect for Surfing, Diving, Snorkeling, Swimming, Tropical Vacations, Summer, Beach & Pool -Athletic top rash guard fits close to your body, but not tight.