Features1Made of mixed rubber material, durable and wear-resistant. 2Inner tube + outer tube design, strong adaptability. 3Built-in TPI fabric, improve sports performance. 4The density of the curtain cloth is 22TPI, the tire is lighter and thinner. 5Groove anti-skid design, prevent slipping in rainy days.SpecificationThis bicycle tire set, made of mixed rubber material, inner tube + outer tube design. The tires are lighter, thinner, and more pressure-resistant. The groove anti-skid design has good drainage and prevents slipping in rainy days.Features:Made of mixed rubber material, durable and wear-resistant.Inner tube + outer tube design, strong adaptability.Built-in TPI fabric, improve sports performance.27TPI density of the curtain cloth, the tire is lighter and thinner.Groove anti-skid design, prevent slipping in rainy days.Optimized Tire Contour Design, suppress vibration, reduce bumpsSpecifications:Color: BlackMaterial: Mixed RubberK841A 27TPISteel wire versionSpecification 26X2.125Tire pressure 40 PSIAir pressure 280KPAWeight about 900gK193 TPI27Specification 700*25CTire pressure 110P.S.IAir pressure 770KPAWeight about 450gPackage list:1*Inner tube1*Outer tubePackage List1*Inner tube1*Outer tube