Royal Robbins Dot Matrix weave makes these a special pair of reliable, adventure-worthy pants. Air gaps are created between you and the fabric for comfort and breathability-a nice plus when you're mucking about on a damp day high in the mountains. The fabric blend, which includes wool, will keep you warm and on course to that next milepost or camp. Thermal Global Traveler Blend 5.25oz., 73% Nylon/23% Polyester/4% Wool. UPF 50+. Tonal stitching details. Zip secure right back pocket. Hook and loop closure on left back pocket and leg pocket. Tricot pocket bags.