Rocky XRB Boot Realtree Edge Men's 8. The waterproof vulcanized rubber construction keeps you dry and holds up to difficult terrain while the Dri-Blaze thermal insulation keeps you warm. A Vibram outsole provides underfoot stability while on wet or rocky terrain. These 16? boots have a removable PU footbed that is easy to clean. The Comfort Cushion and memory foam add stability and comfort on long days. Specifications for Rocky XRB Boot: Manufacturer: Rocky Men's Shoe Size: 8 US Color: Realtree Edge Features of Rocky XRB Boot: 7mm neoprene & 3D TPU molded shaft w/ rubber midfoot Waterproof vulcanized rubber Vibram outsole Removable PU footbed with memory foam Dri-Blaze thermal insulation (800-100 gram equivalent) Package Contents: Rocky XRB Boot Rocky RKS0540-M-8: XRB Boot Realtree Edge Men's