Install a pair of Rhinodillos between your tire and tube to prevent flat tires. Each roll of 26x2" liners weigh 95g. That's 10% lighter than a regular brown Mr. Tuffy. The most important: New formula to create a super tough silver layer that is up to 2 times more thorn resistant than material used by previous liners. Has been independent lab tested against competitors - see additional images. 9 sizes to fit: Mountain Bikes, Road Bikes, Cross Bikes, Commuters, BMX, Cruisers, & 29r's.