Schwalbe SV18 Extra Light Tube (700 x 28-42, 40mm Valve) Size:40mm Valve This weight reduction is accomplished

This weight reduction is accomplished while maintaining the strength and durability expected of a Thomson seatpost

yet X4 is light enough for cross country and cyclocross

Finish: Type II anodizing

INCLUDES: 2 x End Plugs / 2 x Finishing Tape Strips

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

Schwalbe SV18 Extra Light Tube (700 x 28-42, 40mm Valve) Size:40mm Valve This weight reduction is accomplishedSchwalbe 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