Schwalbe SV21E Aerothan MTB Tube (27.5") Size:40mm Valve While there are more durable

While there are more durable endurance tyres available

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thus increasing the speed

Screws for fixing included

Outer/Inner Plate: Nickel Silver

Schwalbe SV21E Aerothan MTB Tube (27.5") Size:40mm Valve While there are more durableAerothan is a material that completely redefines bicycle tubes: extremely light, with maximum puncture protection and designed for minimum rolling resistance. The Aerothan Tube MTB is just as resistant to snake bites as it is to side wall damage thanks to the extremely robust material. In cross country and marathon, a surprisingly low weight and low rolling resistance are great advantages. Even on challenging trails, this tube never gives up on you: