Tannus Armour is the ultimate in tire protection and performance for all levels and riding styles. Tannus Armour sits between the tire and the tube, providing 15 mm of puncture protection on the top as well as 2 mm of sidewall protection against sharp objects and stones. Whether you're a city rider, an adventure cyclist, or prefer off-road, downhill, or gravel trails, Tannus Armour offers you more grip and vibration damping for a smoother, more comfortable, and enjoyable ride. Size: 28 x 1.4 - 1.6" / ETRTO 35-40 / 622; additional protection against side punctures and support for the tire sidewalls; secondary benefit: slow riding (max. 10 km/h) possible with a flat tube; patented Aither 1.1 technology (very lightweight polymer foam); easy installation without tools; extremely long lifespan, and reusable multiple times; compatible tube: 20-25 / 622; type: puncture protection; delivery includes: 1 x Tannus Armour.