Grubs Explore Waterproof Vibram Walking Boot   The new GRUB'S Explore™ is a revolutionary fitness walking boot featuring a 100% waterproof HYDRI-FUSE™ upper and VIBRAM® RGS Hiker™ sole.   COMFORT:   DIAMOND RIP-STOP™, upper with a derby lacing system and fused overlays. Underfoot the 6mm NITROCELL™ footbed provides a soft cushioning for an athletic shoe feel. VIBRAM® RollinGait™ technology allows the Shoe to roll with the action of walking to reduce fatigue and gives daylong comfort. HYDRI-FUSE™ lining is breathable and hardwearing, wick moister away from the wearer’s foot to prevent a sweaty and uncomfortable feel. It is fungus and rot proof so will not smell. Unique FUSED overlays protect and stabilise the foot.   WARM:   HYDRO-FUSE™, comfort and breathability 0ºc to +25ºc. The 6mm NITROCELL™ footbed has a million microscopic nitrogen bubbles that insulate the wearer from cold surfaces.   WATERPROOF:   Double tested in production the DISCOVER™ is waterproof to the top. Single seam vamp and BOOTIE construction.   GRIP:   UNDERFOOT CHASSIS™ of our boots to give a sure footed platform New VIBRAM® RGS Hiker™ (XS-TREK™ rubber) outsole, which gives superior grip on a variety of surfaces, ROLLINGAIT™ technology means the EXPLORE™ rolls with the wearers foot rather than expending energy flexing the boot. Less vertical compression in the heel reducing lower leg fatigue Grubs Explore Waterproof Vibram Walking Boot Various Colours