100% Polyester Zipper closure Gentle cycle 100% Polyester & UPF 50+ : Breathable, moisture wicking,unbelievably soft and lightweight and quick drying for cool comfort. Chafe-Free Comfort & Crew Neck : Flat lock seams and no tag collar minimize friction and offer great comfort. Partial Front Zipper Closure — Heighten collar design offers more covered areas and extra sun protection for your neck, preventing your skin from sunburn in the sun. How to Care : Recommend Hand Wash. Machine wash (gentle cycle). Don’t use laundry detergent, because it will destroy the sun protection layer. Occasion : The UPF 50+ T-shirt is great for outdoor activities like golf, volleyball,fishing, cycling, boating, swimming, climbing, hiking,traveling, running, jogging,workout, outdoor sports and any other of your favorite sports.