The Delta LT Jacket is trim fitting & works superbly either as a lightweight all-year mid layer or as a super warm base layer for extreme conditions. Made with Polartec Classic 100 Micro Velour Small Grid fabric to get a high warmth to weight ratio & excellent wicking properties. The Delta LT dries exceptionally quickly & hugs your body for super efficient performance. This trim comfortable fit makes it great for laying without the unwanted bulk & the full zip means that you can easily regulate your body temperature. Moisture-wicking Breathable Insulated Great warmth-to-weight ratio Card pocket on left sleeve Lightweight ultra quick-drying No-lift gusseted underarms Standard collar Full front zip to improve venting