Smooth Lycra Coveringspecial Treatment With 240°F In High Pressure Chamber, Premium-Textured And High-Quality Lycra Cloth Super Smooth Surface Allows More Accurate Mouse Movement To Ensure Smoother Mouse Control And Pinpoint Accuracy. The Smooth Lycra Covering Improves Tracking Movements And Creates Consistent Gliding. It Allows The Cursor To Move Around Quickly Without Stability Or Cause Pain Or Fatigue In Your Hand.