Features: 1Parameter Description: 27.5 means the tire with a diameter of 27.5in, 2.1 refers to tire width with a unit of inch. Specification 27.5x2.1 indicated on the side of the outer tire, so that 27.5x2.1 inner tube is recommended. 2Strong Material: Made of thick rubber material with high wear resistance and flexibility, having good performance for long service life. 3Widely Application: Widely used in many situations, such as crossing country, racing for all terrains, able to meet most of your needs for daily using. 4Fine Workmanship: The outer tire is special treaded and has high strength structure, able to provide excellent puncture resistance and wear resistance and ensure the service life of the tire. 5High Performance: No hard steel wire included for lighter weight, foldable, can be placed in the bag as a spare tire during travel, high TPI of 30?80PSI and 60TPI, puncture resistance, no tool installation. Item Type: Bicycle Tire Material: Rubber Model: K1047 Color: As Picture Shown Application: for Crossing Country, Racing, All Terrain Gross Weight: Approx.650g/22.9oz Package Included: 1 x Bicycle Tire