The MOAB Speed GTX from Merrel 1 TRL are designed to take on any conditions. The uppers are crafted from breathable mesh and durable TPU with a GORE-TEX® Membrane for waterproof protection. They sit on a Vibram® Outsole cushioned with a Float Pro Foam™ Midsole for ultimate comfort on the go. Mesh and TPU Uppers GORE-TEX® Membrane Waterproof Heel Pull Float Pro Foam™ Midsole Vibram® Outsole