| 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 | Bi-component blend of, 29% Bio-Silver® polyester, 60% polyester, 11% 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. Bio-Silver Anti microbial treatment | Silver Ionized yarns that are weaved together to create an anti-microbial barrier. This helps reduce bad odors and prevent bacteria from metabolizing. | Features Contoured body fit, Flat seam construction for seam strength and to eliminate abrasion, UPF rating of 30+, Warmth Factor = 8 |