| Base Layer | Wrapping your body in warmth. This is your next to skin layer of protection. Body Fit | For those who like it to hug their body and still move and stretch with them, a snug to the body fitting garment. Fabric | 92% MTF polyester, 8% Lycra Finish | Moisture transport to keep skin dry and to promote warmth and inherent anti-microbial properties to eliminate bacteria and odor, Lightly sanded face for softness and warmth UPF Rtating 30+ | Ultra-violet Protection Factor – a rating system that measures the UV protection of which is provided by the fabric. Similar to the SPF rating system used in sunscreens. Features | Contoured body fit, Flat seam construction for seam strength and to eliminate abrasion, UPF rating of 30+, Warmth Factor = 8 |