Description of Hot Chillys Micro-Elite Brushed Solid Zip T - Women's Enhanced moisture transfer to keep you comfortable in extreme conditions, Luxurious Brushed back for added warmth. Features: Unique Blend of MTF Nylon and Spandex Body Fit anatomical design for those who demand ultimate performance Plush warmth without bulk Flat seam construction for seam strength and durability UPF 40+ Warmth Factor = 10