The Mammut Mens Redburn Pro is a durable & versatile shoe that is suitable for everything from walking & biking to use on the approach. This durable shoe shares a lot in common with other memebers of the Redburn family, including a Gripex Cougapproach sole & Base Fit power transfer lacing. What sets the Redburn Pro apart is a stiffer insole, a Poro wedge & the addition of sticky rubber to provide you with greater cushioning, stability & traction that you can rely on, however you choose to explore. Features Velours leather, fabric upper Textile lining Gripex Cougapproach sole, Poro wedge Base Fit Sticky rubber compound Ghilly lacing Asymmetric lacing LP lace Rubber toecap Board lasted Glossary Gripex Cougapproach An approach sole made form gripex APX rubber compound. This rubber gives you incredible traction & is incredibly durable. Base Fit Sliding webbing transfers power from the lacing area to the soles, providing more grip, increased safety & additional comfort. Sticky Rubber Specially developed using rock climbing technology to optimise grip in wet conditions. Stick Rubber has an average off road life span of 600 miles Poro Wedge Extremely light & permanently elastic intermediate sole wedge of compressed Phylon (EVA = Ethylene-Vinyl Acetate) with extremely good cushioning properties.