Tannus armour inserts fit inside your tyre 20" wheel. You then fit a smaller inner tube than normal.
29 x 1.95 - 2.5 Tannus Armour Insert PUNCTURE PROTECTION SHIELD for INNER TUBES
TANNUS Armour MTB
Tannus Armour Bike Tire Inserts
Vittoria Air-Liner Light Gravel Bike Tubeless Tyre Insert + Valve
Vittoria Air-Liner Protect Trail XC Bike Tubeless Tyre Insert + Valve
Huck Norris, MegaNorris MTB Tyre Insert, Hamburger, 60mm SINGLE - RRP was £69.99
