Extra strong rim strips for 29" mountain bikes and 28" trekking bikes. Made from durable nylon. Ensures a secure, firm fit on the rim due to its elastic properties. Features a cutout for the valve. Comes in packs of two. Sizes available: 28” x 18 mm (18 - 622), 28” x 22 mm (22 - 622), 28” x 25 mm (25 - 622).