Fixgear Men's Under Compression Shirt Base Layer Long Sleeve S ~ 4XL Material : Polyester/Spandex , UPF 50+ protection , Durable and Lightweight Fixgear Compression shirts Fit : Second skin fit , Ultra-tight Smooth fabric for extra comfort , Anti-odor technology 4-way stretch allows for greater movement and maintains its shape Moisture Transport System sweeps away sweat , Garment Care : Machine Washable