Highly functional, designed for layering during high effort, cold weather endeavors. Knees up is grid style 60 gram thinsulate, Lower legs lined with grid fleece to reduce bulk, helps to tuck in to boots. Side pockets, adjustable legs, and waist ( some elastic in waistband). Inseam 30” Husband has Worn on one road trip, now he has lost weight, they dont fit. Smoke free home, fast shipper.