Schwalbe SV18 Extra Light Tube (700 x 28-42, 40mm Valve) Size:40mm Valve Finish: Type II anodizing

Finish: Type II anodizing

Latex inner tubes are generally 2-5 Watts (per tyre) more efficient at 30mph than tubes made of other materials

while adding new tools including the most ergonomic and functional chain breaker ever featured in a portable multi-tool

yet X4 is light enough for cross country and cyclocross

Schwalbe SV18 Extra Light Tube (700 x 28-42, 40mm Valve) Size:40mm Valve Finish: Type II anodizingSchwalbe SV18 Extra Light Tubes are made from 20% recycled rubber, so not only are they low in weight, they're lower in their carbon footprint. All valves are nickel plated and threaded and valve inserts are replaceable. Perfect for wider trekking tyres. Less likely to leak, and more reliable. Specifications Fits Tyre Sizes: 700c x 28 42mm Valve Type: Presta Mfr Claimed Weight 105g