Michelin Protek Max Anti-puncture Inner Tube 29x1.85-2.30 Presta Valve 40mm

Puncture or pinch puncture represents the greatest fear and inconvenience for all cyclists. Repairing or changing an inner tube is never a simple operation, as is re-inflating it correctly. Michelin has studied and created an inner tube with a revolutionary concept. Protek Max is a new type of rubber that repairs itself when needed. The inner tube has a special shape with reliefs, which allow it to remain taut and pressed against the external tire. At the right pressure of use, the particular shape of the inner tube allows it to remain elastic, so that any external body will encounter serious difficulties in puncturing it.

Features:

• Size: 29x1.85/2.30
• Etrto 47/58 - 622
  
• Presta valve 40mm