BootDOC Comfort Semelles fixation Black Diamond's contact is a Black Diamond's contact is a 10 tiek lightweight stainless steel crampon that is ideal for glacial hikes Includes 1 pair of 120 cm extensions to secure the battery pack to the size or chest height The high end 3 arch concept model with integral shell technology and shock absorber element Form of the central ark based on Power technologyA large shock absorber element at the front of the footAnatomical amortization at the heel levelDepreciation in the area of ​​the 5th metatarsalFlexion zones in the plantar vaultImproved heel bowlPerfect Visibility of Plantar Vault Color System