Prosicion Gaming Arm Sleeve (Nylon/Medium). Spandex / Nylon construction. Helps you get better aiming in your fps games, maintain your muscular memory at top and keep traction over surfaces as minimal or maximum as you want depending of what sleeve you choose. The combination that we use in our sleeves is super comfortable, you will get a perfect balance keeping you cold in the hot days and hot in the hard winter. For those who want to use our sleeve outdoor or wherever you have continuous exposure to the sun, our material is made to protect you from sun rays. Thanks to the compression that our sleeve makes it is going to help you improve the circulation in your arm and keep the soreness in your arm as low as possible for those long sessions in your pc, console or doing another activities. 100% washable so you can keep it clean - just put it in the washing machine.