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Count on the REI Windbrake Thermal men's pants to provide insulative, wind-resistant warmth. Their smooth, low-bulk cut through the body and legs makes them great for use as a mid layer. Breathable, non-bulky heavyweight polyester fleece has a highly abrasion-resistant face, a wind-resistant laminate and a gridded fleece backing; blocks wind to 50 mph. REI Windbrake Thermal pants insulate even when damp, dry quickly and sport a Durable Water Repellent finish to shed moisture. Waistband is made from woven fabric lined with brushed tricot to ensure a comfortable fit without bulkiness; internal drawcord personalizes the fit. Zip fly with ring-snap closure. Gusseted cuffs feature ankle zippers and rip-and-stick closures to accommodate a variety of footwear; woven fabric at cuffs enhances durability. 2 hand pockets with auto-locking zippers ensure secure closure; zip back pocket. Articulated knees minimize bulkiness and mazimize mobility. REI Windbrake Thermal pants feature an active fit that offers a full range of motion.