Quality Assurance - Double-injected rubber grips for added comfort and thermostable that guarantees its long working life. Ergonomic Design - Curved palm design reduces hand fatigue and provides you with ultra comfortable experience; perfect for extended, high-stress gaming sessions. Cutouts and Buttons - Full access to ports and buttons; provides SL and SR buttons on the top of grip to facilitate your game control. Extra Protection - Special Joy-Con cover firmly docks the device and protects it from bumps and scratches.Visible player indicator lights. Easy Installation - Quick snap-on installation and easy removal offer you maximum convenience. EASY TO INSTALL Quick snap-on installation and easy removal offer you maximum convenience, simply clip a Joy-Con into each grip attachment, full access to ports and buttons,to become a fully functional joypad for the Nintendo Switch. ERGONOMIC DESIGN Specially designed thumb grips, special surface treatment and anti-slippery groove on the back,suitable for all ages and hand sizes.They offer plenty of support to prevent hand cramps and strain when playing with the Joy-Cons. Especially during those long multiplayer sessions.