Description The Rab Cirrus Hut Boot is designed to keep your feet warm when you need it! Filled with PrimaLoft® Silver Insulation Luxe, the booties are lined with recycled nylon and feature a breathable, weather-resistant recycled Pertex® Quantum outer. The lower edge is reinforced to ensure durability, while the cushioned EVA foam footbed and flexible, non-slip sole offer extra support and comfort. These boots are great for those long glassing sessions on the mountain or for warming you up before you hop into your sleeping bag after a long cold day of hunting. Sizing Size US Men's US Women's CM Medium 8-9 9-10 25-26 Large 10-11 11-12 26.5-27.5 X-Large 11+ 12+ 27.5+ Specs Weight 7.3 oz Insulation PrimaLoft® Silver Insulation Luxe Material Recycled nylon lining, Weather resistant recycled Pertex® Quantum outer Manufacturer Warranty Guaranteed against defects in workmanship or materials