The lightest self healing tubes on the planet instantly seal punctures up to 188243 403mm41 slime lite tubes combine a lightweight butyl tube with revolutionary sealant technology to provide flat protection without adding significant weight go lite slime light tubes combine a lightweight butyl tube with a revolutionary sealant that prevents punctures up to 2mmnow with a longer valve stem26 inch tube with schrader valve fits 26 x 175 40559 x 47 mm41 26 x 190 40559