Schwalbe standard bicycle inner. Retains air for an above-average length of time. Thanks to the best material quality and uniform wall thickness. Maximum reliability that has proven itself millions of times over. Features Valve: Schrader. Valve Length: 40mm. Material: Butyl. 20% recycled rubber. Eco-friendly packaging. 100% recyclable tube.
Best Price: £6.99 from Merlin Cycles