Features: *The TPU inner tube improved puncture resistance, light weight and more compact when folded. The weight is 24g (float up and down 3g). *Our inner tube reduced rotation mass where there are more wheelsets, more responsive acceleration and resulting improved handling and climbing speed. *Three times reinforced seal for the easily damaged and irreparable nozzle connection, which is more secure. *The tube is made in entirety, with no long seams around the circumference of the inner tube,There is only a ring of joints around the vaIve,Reduces the possibility of air leakage. *Resistant to high and low temperatures, stable tyre pressure ensures your safety when going downhill. Specifications: *Product Name:Ultralight TPU Inner Tube *Material:TPU *Size: 20×0.9-1.5 / 20×1.75-2.5 / 20×1.9-2.5 Inner Tube. 45 mm / 65 mm Presta Valve *Color:Blue Package Content: Inner Tube*1 Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Features: Tire Protection Solutions Ultralight TPU Inner Tubes Fit Many Bicycles Material: light weight, good strength and well temperature resistance, good impact resistance Appearance and performance: automatic cutting, smooth edge, fit most of the road bicycles, delicate texture. Compatibility: smooth surface and exquisite workmanship, fit most of the bicycles. Easy Installation: Brand new and high quality, easy to install.