Foam-based tubular insert, developed for tubeless tires to protect the rim, provide more grip, and prevent punctures. Can be installed on standard wheels or tubeless-ready wheels with tubeless and tubeless-ready tires, as well as with any sealants (preferably without ammonia). Lifespan of 2000 hours; after a puncture, it can still be ridden for one hour. Ideal for rim widths greater than 25 mm. Please note: 1 piece is for one bike, not for two bikes.