A4 Sportswear Compression Crew High Performance Moisture Wicking Crew Shirts. Available in 3 Styles Short, Half & Long Sleeve. 80% Polyester, 20% Spandex, 5.0 Ounces/Square Yard 4 Way Stretch provides Moistutre Wicking, Odor Resistant, Stain Release. Shirt/Undershirt worn by Athletes Training, Football Players, Baseball Players and all Athletes in High Performance Sports. Available in 9 Colors in 6 Adult Sizes