With all the features of the legendary Original the height of this boot is shorter to prevent the rear of the knee pinching. The calf has a slightly more generous cut to eliminate any tightness. Upper : Vulcanised natural rubber construction, built on an orthopaedic last Outsole : Traditional calendered natural rubber sole Lining : Quick dry knitted nylon lining Footbed : Multi-layer cushioned sponge insole Weight : 1800 gms/pair (size 7)