Bontrager XR Endurance Elite Lock-on Mountain Bike Grips provide extra support to your hands, reducing numbness on long rides. The shape of the XR Endurance grips adds support for the ulnar nerve while an opposing tread pattern ensures your palms are padded & your fingers are locked in. The result is an ergonomic grip that will keep your hands comfy for long off-road rides. Although designed for mountain biking the XR Endurance Elite Lock-on grips also work well for touring & commuting. Features The contoured design comfortably supports the palm to decrease fatigue Opposing tread design absorbs shock in palms with a biting grip in fingers Dual-density compound design provides secure grip, control, & comfort Tread features continuous channels to funnel sweat for effective moisture management Core-lock clamp eliminates slipping by securing grip core to bar 3mm M4 bolt increases hold & resists stripping in Form Bio Dynamic shape with narrow in-board diameter increases finger wrap