Arc'teryx Epsilon LT Jacket - Men's Activity: Backcountry Skiing, Rock Climbing, Hiknig, Trekking Epsilon: Air permeable mid layer fleece with a hard faced smooth outer surface made with hydrophobic Bonded Poly Micro-Grid Fleece LT (Light Weight): Built with highly durable top performance materials but designed with a streamlined minimalist set of features to provide very light weight Fit: Athletic fit, Hip length Weight: 1lb 1.5oz