A PU laminated toe cap and side reinforcements provide additional protection and durability. We specifically engineered the silhouette to reduce bulk and avoid the puffy look of many mountain bike shoes. She adapts to civilization as the backcountry missions are completed. The X2 outsole is an expression of the versatility of these shoes: it was developed to offer an optimal balance between efficient pedaling performance and flexibility for comfort and control on and off the bike. The compressed EVA midsole provides stability and cushioning, while the Vibram Megagrip rubber tread provides grip and traction no matter the conditions underfoot. upper: abrasion resistant ripstop, outsole: vibram Rubber sole with EVA midsole, nylon insert to reinforce the pedal plate, stiffness index:.