Sitting between your tire and inner tube, the Tannus Armour provides 15mm of puncture protection on the top, as well as 2mm of sidewall protection from sharp objects and rocks - but Tannus Armour is MORE than just puncture protection:
Whether you are a city biker, adventure tourer or prefer the off-road, downhill or gravel trails, Tannus Armour gives you increased grip and vibration dampening for a smoother, more comfortable and enjoyable ride. One of the great features of the Tannus Armour is that if you get a flat during the ride you can ride a few miles without hurting your rim. However, if you do get a flat please avoid rougher terrain.
Tannus has been developing tire technology since 2003 and is the number 1 brand of airless tire technology in the world. At the heart of Tannus is the patented Aither Technology. Aither is a multi-cell foam compound that forms the structure of the Armour. It’s a high quality foam-like polymer that offers vibration damping, a smoother ride, and puncture resistance.
5,000 Mile (7,000 Kilometer) Warranty (but they can be ridden much longer)!
Installing Tannus Armour Inserts is pretty simple. No messy sealant to deal with, and no need for high PSI pumps. The first thing to do is make sure you start with the right size insert, and tube. Also note that you will need to use a tube that is a size down from what you typically use for your fat tire.
TRIMS DOWN TO FIT
26" x 4.0-4.8"
26" x 2.75-3.5"
26" x 4.0-4.2"
20" x 3.0-4.0"
20" x 2.5-3.5"
20" x 4.1-4.8"
20" x 3.0-4.0"
Click on the installation sheet for the full size PDF