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 Polartec(R) 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: Ski/Snowboard / Backcountry Skiing / Hiking / Trekking Materials: Polartec(R) Classic 100 Micro Velour Small Grid-100% polyester, 152 g/m . This fabric rapidly wicks moisture away from the skin, while still being highly breathable and ultra light.