88% polyester 12% spandex Men& 39;s Short Sleeve is wear-resistant, breathable, lightweight and comfortable material, quick-drying, quickly absorbs moisture from the skin, keeping it dry, cool and comfortable.UV Protection This men& 39;s T shirt outdoor T-shirt is made of fabric with excellent UV protection function.88% Polyester, 12% Elastane.Good elasticity Wearing T shirt for men for free movement and comfortable. There is no reason to worry that the skin will be injured if the sewing line is outside. Tip: This is not a tight fit, we chose a casual style.Ergonomic Seam Design Men& 39;s Surfing Wetsuits features flatlock seams and no collar tag to reduce chafing and increase comfort. Raglan sleeves provide full range of motion for both arms.Multifunctions Perfect for outdoor activities like surfing, running, traveling, swimming, hiking or other your favorite sports."