The Edge Baselayer Top blends rayon viscose, wool, and Elite PBT into a body-contouring jacquard knit that delivers thermal warmth without bulk, with mesh venting built into the zones that run hottest on a hard-charging day, so it layers clean under a shell without adding bulk under a helmet strap or pack. Features: Body mapping technology Jacquard knit w/ mesh knit Size & Fit: Fit Profile: Body Contouring Size Range: S–XXL Materials & Care: Yarn: 59% Rayon Viscose, 22% Wool, 19% Elite PBT. Care: Handwash cold, not tumble dry. Rinse twice. Do not use powder detergent, use liquid detergent. Do not store while wet. Do not dry clean. Do not bleach. Do not use fabric softeners. Wash with like colors.