Tannus Armour has been developed with our patented Aither technology. A multi-cell foam compound that is lightweight, flexible yet incredibly durable. Aither is the culmination of 10 years of Tannus development within the tire industry Tannus Armour is a foam insert that sits between your inner tube and tire, providing an additional layer of protection against 4 main types of damage.Sharp Objects,Sidewall Tears,Rim Strikes,Pinch Flats Vibration Dampening,.The Armour very noticeably absorbs a huge amount of the vibration from the ground (eg. rock strikes) and dissipates the energy evenly in the tube. The result is a much smoother, quieter, more comfortable and compliant ride.Lower PSI: The Armours near 360deg bead-to-bead, protection gives sidewall structure to the tyre, allowing us to ride at much lower pressures without the tire deforming and becoming slow and difficult to handle.Puncture Protection: Armour eliminates 90% of all punctures due to its reinforced sidewall and underside protection.Increased Grip: Run at lower pressures for increased grip in wet conditions and loose rock.Increased Comfort: Armour absorbs vibration for a smoother, more comfortable ride.Run Flat: If you do get a flat tyre you can still ride for a limited period at up to 6mph without damaging your wheel.Fast Rolling: Engineered to minimize rolling-resistance (drag), Tannus Armour provides the ultimate balance of speed and protection.Easy Installation: Installing the Armour is as quick and easy as installing a regular tyre and is maintenance free.