ESI grips are made in the USA from 100 percent silicone. Chosen by World Champions and Olympians who value performace, increased control, and superior shock absorbtion. ESI Ribbed grips have 8 distinct ribs that optimize shock absorption and grip. ESI's thickest, most plush grips Installed diameter - 35mm Made for 22mm bars (can fit applications down to 19mm) Bar Plugs included Latex & Rubber Free