This wicking, performance fit top features ergonomic seaming, 4-way comfort stretch fabric, and a thermal reflecting liner.Features: 4-way comfort stretch Antimicrobial treatment intended to protect the product from bacterial growth. The active biocidal substance is pyrithione zinc. Ergonomic seaming Flatlocked construction Omni-Heat™ thermal reflective Omni-Wick™ Center Back Length: 26.0" Uses: Hiking, Ski / Snowsports Hiking type: Day hiking, Backpacking Performance Fit: Body contouring fit conforms to movement. Composition: 85% polyester, 15% elastane Omni-Heat™ Reflective Anytime Stretch JerseyCare Instructions: Machine wash 30 degrees gentle Non bio detergent Do not bleach Tumble dry low Do not iron Do not use fabric softener Do not dryclean Columbia Women's Midweight Stretch Long Sleeve Baselayer Top Nocturnal 466 1639021