2 Pack SPINGO TPU inner tube road bike 700C 23-32C/35C-43C with Metal valve Ultralight bicycle for bikes and gravel, puncture-proof Presta 48 mm/60 mm

Wide size compatibility: the Spingo TPU bicycle tube 700C fits gravel bikes from 35C to 43C mm (35C / 38C / 40C / 42C / 43C). Thanks to modern TPU material technology, this 700C TPU Gravel tube offers very good air tightness and stable pressure retention, ideal for long road bike tours, fast training and performance rides. TPU material: TPU inner tubes are lighter and more stable than butyl rubber and have a higher airtightness than latex. With a weight loss of 70% compared to ordinary butyl rubber inner tubes, the use of this TPU ultra-light inner tube can significantly reduce the rotation mass and make the ride more flexible. Portable: the dimensions of the bicycle inner tube are only 11.3 cm x 3.5 cm x 3.0 cm, which is about 2/3 less volume than the traditional butyl rubber inner tube, reduces the load on the bike and makes the ride easier. 【Eco-friendly】The TPU inner tube (thermoplastic polyurethane elastomer material) is made of environmentally friendly thermoplastic polyurethane material, which is 100% recyclable. Purchase with confidence: After receiving our TPU inner tube, you can contact us immediately if you have any problems, and we offer technical support and after-sale guarantee.