Notes: You must use a smaller tube with Tannus Armour inserts. Tire insert 26 x 4.0-4.80 requires a 26x3.0-4.0 tube. Minimum inner rim width needed to install the inserts is 19mm. Run-Flat Technology does not apply to the following sizes: 20x3.0-4.0, 20x4.1-4.8, and 26x4.0-4.8.

Puncture Protection - Eliminates 90% of all punctures. Tannus Armour provides 15mm of puncture protection on the top, as well as 2mm of sidewall protection.
Easy Instalation - Tannus Armour is an insert the wraps around your tube inside of your bicycle tire. Installation is a simple additional step when installing your bicycle's tube.
Tannus Armour weighs between 190-500 grams depending on the size. It provides 13-15mm of protection at it's thickest point and 2-5mm of sidewall protection.