Pirelli Pzero SmarTube Presta 700x23-32c / 60mm

It is exceptionally light, just 39g on the road.cc Scales of Truth, improves ride comfort, and provides better puncture resistance than lightweight butyl tubes. 

• Polyurethane tube
• Twice as strong as a regular butyl tube
• Super lightweight
• Very compact
• Presta 60mm