Reflex Lock-On grips have been engineered to reduce impacts and vibration being passed on to the riders' hands to allow you to ride more with less pain and fatigue.Medium/Large profile / Medium Compound (Diameter 33.5mm)V2.1 lock-on single clamp system provides more useable grip spaceReinforced durable endsSoft flexible ribs at thumb provide impact dampingPadded top grip section for excellent shock absorptionAngled waffle pattern with oversized top rib that matches finger articulation points for improved control and more ergonomic feel