Unisex sleeveless vest made with active insulation material. I purchased this but am selling it as I have no opportunity to use it. Ultra-lightweight and minimal active insulation. Wear it over a base layer when you feel a little chilly. This is an ultra-lightweight and simple vest-type active insulation (thermal active wear). - Model Name: Alpha Vest - Color: Gray - Design: Sleeveless - Material: Active Insulation - Gender: Unisex Returns are not accepted, so please inquire beforehand if you have any questions. Thank you for looking.