Even lighter than previous model. Tighter air seal. Inner tube rolling resistance test Test conditions: room temperature is 16 degrees Celsius, simulated load is 80kg, speed is 32km/h, tire pressure is 110psi; corsa 25c is used for the outer tire. Test results (1 hour average power): latex inner tube - 7.9W; ridenow inner tube - 8.7W; tubolito tul bo-road - 9.9W; Continental race28 - 11.2W Size: 700 x 18/32c Recommended range Material: TPU Weight 24g Valve length French 65mm, 45mm, 85mm Due to the special TPU material, the durability is also greatly improved compared with the traditional inner tube. The ultra-light weight is only 24g, which is about 100g less than the traditional butyl inner tube, and a pair saves 200g! At the same time, the inertia of the outer ring of the wheel set is reduced, making the sprint and acceleration more sensitive. The inner tube should not be inflated a lot when the outer tube is not installed, otherwise it will cause irreversible damage. Before installation, slightly inflate to check for air leakage. When installing, please inflate 0.5PSI first, make sure the inner tube is close to the inner wall of the tire when inflating, and then press and adjust the inner tube. If the vacant pump exceeds 6PSI, the expansion cannot be repaired, and it is strictly forbidden to exceed 6PSI without the tire installed. https://www.icebikeheaven.com/2023-ridenow-world-lightest-24g-road-bike-fixie-700c-inner-tube-presta-45mm-65mm-85mm-tubolito?search=ridenow Deliver to Malaysia, SG, Brunei, Worldwide Accept Ewallet TouchnGo, installment & Credit card How to Order 1.Product Option: 2.Quantity: 3.Color: 4.Name: 5.Address: 6.Contact number: Send to ☎FB http://m.me/icebikeheaven ☎ http://www.wasap.my/60174204398 Sales, Order, Customer service ☎ http://www.wasap.my/60195272398 After sales/ Warranty FOLLOW US ✔ https://www.ebay.com/str/icebikeheaven37 ✔ https://shopee.com.my/icebikeheaven?tab=shop ✔ http://www.lazada.com.my/ice-bike-heaven/ ✔ https://fb.me/icebikeheaven ✔ https://www.instagram.com/icebikeheaven37/ Buy from Us! 🚴🏻💯% POSITIVE FEEDBACK 🚴🏻💯% Warranty & After Sale Service 🚴🏻💯% PARCEL ARRIVAL GUARANTEED 🚴🏻💯% ❌hidden charges 🚴🏻 7️⃣ days size exchange 🆗 🚴🏻 7️⃣ days 100% 💲💲 Guarantee back ☄ Prompt response 🥇♞ SSM Registered company- Icebikeheaven 🥇 8 Years of experience Bicycle shop or want to dropship? pm us now!