Kenda Thorn Resistant Inner Tube 20 x 1.75-2.125 Schrader
Vat included.
Shipping - Postage £3.49 for items up to £40, postage free for all orders above £40. (Wheels, bikes, frames and turbo trainers £7.49 postage)
Kenda's thorn resistant inner tubes features extra thick 4.3mm walls on the outer side, to help keep those punctures at bay.