GoLite Men's Discover Lite Hard Travel 100% Leather Rubber sole Precise Fit system is anti microbial removable insole can be adjusted to accommodate high, medium or low volume feet New "Paw Pad Suspension System" outsole provides perfect "hike/run" performance, traction, durability and support Precise Fit system- an anti-microbial removable insole can be adjusted to accommodate high, medium or low volume feet Paw Pad Suspension System Trail Strike