Foam-based tubular insert, developed for tubeless tires to protect the rim, provide more grip, and prevent punctures. The Air-Liner Light is super lightweight (50 g) and enhances the performance of the wheel-tire system for cross-country, down-country, and trail applications. Compatible with mountain bike tire sizes from 29x2.1" to 29x2.4", with rim widths of 25 - 30 mm, and with any type of liquid sealant. Should only be used in combination with tubeless tires and tubeless multiway valves. The packaging includes one Air-Liner and a Vittoria Green Multiway Tubeless Valve with a length of 40 mm. The design of the Air-Liner Light increases lateral stability in corners. With the Air-Liner Light, you can tackle the most extreme corners at higher speeds.