The Columbia Highland Summit II men's insulated pants with bib are made of Rebound Stretch polyester lined with Omni-HeatTM Infinity thermal reflectors that deliver increased heat retention and high breathability, and covered with Omni-TechTM waterproof and breathable membrane to help keep you warm and dry even in the worst winter weather conditions. These snow pants feature adjustable straps and a 60 g Microtemp XF II insulation, sealed seams and internal leg gaiters for increased protection and durability to withstand years of adventures in the outdoors.