This super-soft Omni-Heat Base Layer Tight is ideal for trekking out in wintry conditions. Made from durable, anti-pilling 86% polyester, 14% elastane fabric with 4-way comfort stretch. Omni-Heat thermal reflective lining regulates temperature by retaining body heat while allowing moisture and excess heat to escape. Traps body heat without adding bulk, yet still retains supreme breathability. Omni-Wick advanced evaporation technology offers ultimate moisture management for outdoor activities. Antimicrobial treatment helps reduce odors. Ergonomic seaming and gusset detail. Fits close to the body for easy layering. Functional fly for ease of use. Imported.