⚡ BOOST SPEED & PERFORMANCE: Experience superior cycling with our TPU Inner Tubes. Weighing only 56g (26"), 60g (27.5"), or 66g (29"), they're significantly lighter than 150-200g rubber tubes. Reduce rolling resistance and enhance speed on any trail. Compact design for easy storage and transport. 🚴 ULTRALIGHT & DURABLE TPU Tubes: Crafted from advanced TPU, our TPU Inner Tube for MTB offers unmatched durability. Superior puncture resistance and burst-proof design. Oil and water-resistant, with excellent load capacity and impact resistance for your MTB 🚴 WIDE COMPATIBILITY: Our TPU Bicycle Tubes fit a range of mountain bikes. Available as 29 Inch MTB Inner Tube, 27.5 MTB Inner Tube, and 26 Inch MTB Tube, compatible with 1.75-2.4" tire widths. All feature a 45mm Presta valve 🛠️ EASY INSTALLATION: Remove the wheel and take out the damaged MTB inner tube. Inflate the new TPU inner tube up to 30% of its capacity so it can take shape and fit more easily (do not inflate beyond 6 PSI). Insert the valve in place and slide the rest of the tube inside the tire. Then, reattach the tire to the wheel. You can now inflate the tire to the recommended pressure. Finally, reinstall the wheel on the axle, ensuring the rear derailleur and chain are properly positioned. 🚴 100% GUARANTEE: Customer satisfaction is our top priority. If you have any questions, issues, or are not satisfied with the product, please email us and we will assist you as soon as possible. IMPALAPRO TPU Inner Tube for MTB - Ultralight TPU Bicycle Tubes (56-66g) - Compatible 26", 27.5" & 29 Inch MTB Inner Tube (1.75-2.4") - Presta Valve 45mm (1pc 27.5'')