RUSH TRK GTX is the new benchmark for all day long and short mountain hike. It is a walking boot made in the name of comfort with technologies that reduce foot fatigue during the hike. It represents a culmination of soft comfort, solid stability and a lightweight feel. Scarpa Mens Rush Trek GTX Features: Insole DTS TPU Frame Last RHA Lining GORE-TEX Extended Comfort Footwear Mid Sole 3D EVA-CM Sole PRESA TRK01 / SuperGum Upper 1.8mm Suede & Fabric Weight 555g; (1/2 pair size 42)