SIZING: Big size available! To ensure the right fit for your arm, please use your biceps circumference as the main sizing reference. Currently, we offer only sizes L and XL. One sleeve per order. REMOVE FRICTION: Engineered for seamless movement, our sleeve reduces arm and wrist friction, enhancing mouse precision and control. Removed friction are applied on hard mouse pads and glass pads. If you have cloth mouse pad we recommend nylon x spandex material. COOLING COMFORT: Cools your skin by approximately 35.6°F. Designed with advanced cooling technology, the Nexa sleeve keeps your arm at the perfect temperature, ensuring comfort and focus during intense gaming sessions. ERGONOMIC FIT: Nicely conforms to the size of your arm. Designed for optimal ergonomic support, the sleeve adapts to your arm, providing gentle compression that combats fatigue without restricting your movements. IMPROVE BLOOD CIRCULATION: Our sleeve promotes healthy blood flow, reducing muscle fatigue and aiding in quicker muscle recovery. Experience the benefits of improved blood circulation. Nexa sleeve is engineered to promote blood flow, reducing muscle strain and enabling quicker recovery, so you're always game-ready. SWEAT - RESISTANT: Stay dry and in control. The moisture-wicking fabric of our sleeve ensures that sweat doesn’t get in the way of your game, enhancing grip and comfort.