The new Grubs Explore is a revolutionary fitness walking boot featuring a 100% waterproof hydri-fuse upper and vibram RGS hiker sole. * 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. * Double tested in production the discover is waterproof to the top. * Underfoot chassis of our boots to give a sure footed platform Grubs Explore Walking Boot Navy