Bike Tire Insert, Fat Tire Tube, No Flat Bike Tire Liner, Puncture Proof Tube Protector for E-Bikes and MTB

MAXIMUM FLAT PROTECTION: Tannus Armour tire insert helps prevent flats caused by thorns, rocks, and debris while improving comfort and protection for mountain bikes, gravel bikes, fat tires, and e-bikes. ADVANCED FOAM TECHNOLOGY: Made with lightweight multi-cell foam, it provides 1.9”-2.25” of tire protection, sidewall support, vibration reduction, and a smoother, quieter ride. RUN-FLAT & PINCH FLAT PROTECTION: Adds extra support during punctures and helps prevent pinch flats, allowing you to keep riding even with low tire pressure. BETTER RIDE CONTROL: Unlike traditional solid liners, Tannus Armour improves stability, grip, and handling while maintaining comfort and low rolling resistance. EASY INSTALLATION: Installs between the tire and inner tube in 10–15 minutes without special tools. Reusable for tire changes on mountain, gravel, fat tire, and e-bike setups.