Features: good anti-impact and traction,little rolling resistance,tear-proof,better heat-spreading. Sizes: 4.00-12 4.50-14 5.00-14 5.00-16 5.50-16 6.00-12 7.50-16 7.50-20 8.3-24 9.5-20 18.4-30 16.9-28 ........