Black #253 Multi-Sport Sole

Design: VIBRAM ® Multi-traction lugs for 360 degree grip, thrust, braking
VIBRAM® Trek rubber compound
Designed with a nylon insert that has variable flex zones:

Heel zone - medial flexibility for natural heel strike, and lateral stability for anti-pronation
Midfoot flex zones for natural forefoot movement<
Toe area asymmetric flexibility zones for stability and natural toe-off
EVA midsole light and comfortable.