The sports jerseys are made of high quality polyester, which is lightweight, breathable, absorbs sweat and keeps cool. The scrimmage training vest can be washed by machine, and will not deform or fade when rough playing. These training vests have two elastic bands on each side, which are reinforced to prevent damage during movement and cleaning. The elastic band is made of material with good elasticity and firmness, and the two sides are open, so you can feels less bound when moving, and can easily put on and take off them. Suitable for football, basketball, team work, game, etc.