Presta valve air chamber with Puncture fluid protek max 27.5 x 1.90/2.30

The square inner tube:

• A square inner tube with bumps, the whole approach to the inner tube has just been rethought. For this, Michelin has implemented three technologies :

A bumpy design:

• Unlike a conventional inner tube that will react like a balloon that is punctured, it allows to reduce perforations.
• The combination of this characteristic with the prior injection of a self-sealing liquid effectively counteracts the horrors of perforation.

A square section:

• It provides optimum wedging on the rim while eliminating the phenomenon of twisting, which facilitates its installation.

Features:

• Revolutionary anti-puncture design
• Preventative already in the chamber
• Ultimate puncture resistance
• Easy to mount
• Removable shell
• Excellent pressure maintenance
• Presta 40 mm valve type