Tannus Armour, Armour, Tire insert, 27.5 x 2.0-2.5

Virtually Eliminates Flats, Tannus Armour wraps around your tube. With up to 15mm of protection, sharp objects can't penetrate your inner tube. Tannus Armour's design also helps protect your rim on those big drops and hard hits. The Tannus Armour sidewalls help stabilize your tires on corners and cushion the ride for more comfort.