The Cimkiz Unisex Sweat Sauna Vest in XXL is a sleeveless, solid black vest made of polyester, nylon, and neoprene. With a pullover closure and round neckline, this athletic fit vest is designed for activewear occasions such as gym training, running, and weightlifting. It features a compression fit and is suitable for all seasons, making it a versatile and practical choice for outdoor sports and athleisure activities. Hand wash only to maintain the quality of this one-piece sauna suit.