Schwalbe SV21E Aerothan MTB Tube (27.5") Size:40mm Valve The final product is a

The final product is a tread that performs unlike any other

Features USB convenience

The densely knit premium fabric provides an increased level of insulation as temperatures begin to drop

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Combining a new layup with tubeless technology guarantees exceptional rolling characteristics

Schwalbe SV21E Aerothan MTB Tube (27.5") Size:40mm Valve The final product is aAerothan 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: