Delta Series: Air permeable mid layer fleece garments with differing degrees of thermal efficiency. LT: Light Weight. Built with highly durable top performance material but designed with a streamlined minimalist set of features to provide very light weight. This full zip jacket is made with PolartecR Classic Micro Velour small Grid. Patterned with a trim fit for layering comfort, this lightweight fleece wicks moisture and breathes very well. Features: Moisture wicking Highly breathable maintains comfort during aerobic activity Insulated Great warmth to weight ratio Lightweight Quick drying Gender specific patterning No lift gusseted underarms Full front zip with chinguard Drop back hem Laminated sleeve pocket with laminated zip Two hand pockets with zippers Trim Fit, Hip Length Weight: 285 g 10.1 oz Activity: SkiSnowboard Backcountry Skiing Hiking Trekking Materials: PolartecR Classic 100 Micro Velour Small Grid 100% polyester, 152 gm . This fabric rapidly wicks moisture away from the skin, while still being highly breathable and ultra light.