This listing is for a PAIR of quality Impac Inner tubes by Schwalbe These will fit 28"/700C wheeled bikes running tyres from 20C - 28C Standard 40mm Presta long valve Reinforced dual thickness tube valve interface to prevent punctures Light weight butyl rubber construction Suitable replacement tube to fit the following tyre sizes: 700 x 20C (20-622) 700 x 22C (22-622) 700 x 23C (23-622) 700 x 25C (25-622) 700 x 28C (28-622) 27 x 7/8" (22-630) 27 x 1.00 (25-630) No need to wait around for the courier as they conveniently packed for FREE LETTERBOX DELIVERY! PLEASE NOTE: To keep the price low, this tube may be shipped without the original manufacturers box.