A low profile single lock on grip, designed to reduce arm pump and hand numbness. The Diamond knurled texture, with saw tooth finger ramps and a super tacky 20A compound provide ultimate traction. More traction means less death-gripping the bars and less arm pump. One Up’s single lock has the profile of your favorite double lock-on. But to reduce hand numbness they’ve replaced the hard outer clamp with extra rubber for greater cushioning of your palm heel. Get all the benefits of an “ergonomic” grip without the city bike cruiser look!