Pirelli Scorpion SmarTube Tube - 27.5 x 2.2 - 2.6, 42mm Presta Valve

Scorpion SmarTube is the mountain bike specific inner tube that blends the innovative features of TPU (Thermoplastic Polyurethane), a specific formulation for the riders that are looking for the best balance between protection against punctures, weight and volume.
SmarTube offers low weight and volume combined with a high level of reliability, not available with an equivalent butyl tube
The perfect solution for marathon racers and trail and enduro riders that are looking for a lightweight, resistant and compact spare tube
The volume of the Scorpion SmarTube is up to 50% less than an equivalent butyl tube making it the ultimate spare tube: it saves space and doesn't add weight on the trails
Do not use with rim brakes