The performance of the fully waterproof full grain leather has been enhanced by the inclusion of a breathable and waterproof membrane layered into the construction. Additional versatility in fit is achieved with the adjustable side gusset which tailors the fit to any circumstances. This is a practical style definitely at home in the most demanding conditions in the field.The full calf leather lining adds comfort and enhanced durability; moulding to your foot for a better fitting, absorbing moisture and more durably than many textile lining fabrics.Waterproof and breathable membraneEnhanced performance from the technical full bootie membrane - offers waterproof capability and enhanced performance Removable dual density EVA footbed with additional forefoot and heel pads - for added shock absorption and includes an antibacterial top layerExclusive rubber outsole design featuring aggressive pattern designed - for constant mud clearance offering great grip and performanceFull length gusseted shaft - eases entry and removal of bootsYKK zip - easily opens or secures gusset closed Leather behind zip - keeps water/mud/debris out Zip is further protected by a leather flap and secured by popper and buckle - for smooth operation and to keep zip clear of dirtScratch rubber rand - helps protect leathers in areas of high absorption Upper:Waterproof 2.2mm full grain leather, full length YKK zip with internal gusset and external cover. Scratch rubber rand.Lining: Full 1.0mm calf leather lining with highly waterproof/breathable membrane bootieMidsole: Phylon - for added cushioned comfort Footbed: Dual density EVA footbed with forefoot and heel pads for added shock absorption Weight: 1090g