![Tannus armour insert, 26x4-4.9](http://thebearmountain.com/cdn/shop/files/138257-1773127-0-image-2029465_640x640.jpg?v=1721299719)
Tannus Armour is an insert for your bike tire the ultimate in tire protection and performance for all levels and styles of riding. With this tire liner, thorn flats are a thing of the past. We went with Tannus because they have been at the forefront of innovation in tire technology since 2003 and are the #1 brand of airless tire technology in the world.