Features1Made of high-quality TPU material, durable to use. 2Good airtightness. 3Lightweight design effectively improves performance. 4Roll compactly for easy storage and transport. 5Suitable for road bikes, good replacement for the old inner tube on your bike. 6NOTE: Please do NOT inflate the inner tube where there is not outer tire and the pressure is over 2PSI.SpecificationFeatures:Made of high-quality TPU material, durable to use.Good airtightness.Lightweight design effectively improves performance.Roll compactly for easy storage and transport.Suitable for road bikes, good replacement for the old inner tube on your bike.NOTE: Please do NOT inflate the inner tube where there is not outer tire and the pressure is over 2PSI.Specifications:Material: TPUType:700*23/28 FV 60mm;29*1.9/2.6 FV 48mm;27.5*1.25/1.75 FV 48mm;26*1.25/1.75 FV 48mm (optional)Package Weight: Approx. 46g-76gPackage List:2 * Bicycle Inner TubePackage List2 * Bicycle Inner Tube