Responsible Collection: Recycled/Repurposed Upper Material: nylon, ripstop, TPU Waterproofing: GORE-TEX membrane Closure: lace Footbed: PU (removable) Now with 30% more foam underfoot, the Merrell Moab Speed 2 GTX Hiking Shoe keeps things light on our feet and comfortable on the trail. The lightweight synthetic uppers lighten the load compared to the original leather Moab, and we like the all-weather protection of the GORE-TEX lining and the multi-sport, multi-surface traction of the Vibram outsoles.