La Sportiva Men's Olympus Mons EVO Boot polypropylene Outer Boot: Cordura upper lined with dual-density PE micro-cellular thermal insulating closed cell foam and thermo-reflective aluminium facing/ Insulated removable footbed/ Vibram rubber rand Inner Boot: Water repellant breathable upper with polyamide external layer/ Dual-density PE thermal insulating micro-perforated ventilated foam/ Tri-dimensional structured polyester lining combined with pile Gaiter: Breathable Cordura/ Kevlar anti-perforation fabric/ Riri Storm zipper (UV resistant & waterproof) Insole: 5mm Carbon Fiber + 2.5mm PE micro-cellular thermal insulating closed cell foam topped with a thermo-reflective aluminum layer reinforced with perforated hydrophobic non-woven facing; Midsole: TPU/ Micropore EVA; Sole: Insulating Vibram PE w/ rubber toe inserts Weight: 49.86 oz / 1413 g