Product Description A lightweight mid-layer that performs in a variety of situations throughout the year. It uses Octa, a hollow fiber that is about 1/2 the weight of regular polyester fibers and quickly absorbs and disperses sweat through capillary action with its eight protrusions. The fabric structure easily traps dead air, making it a functional material with high heat retention and quick-drying properties. It is also treated with antibacterial and odor-resistant processing to care for odors. The highly fitting hood is balaclava-style. Waist pockets have been added to further enhance functionality.