The Women's Deep Space Midweight Base Layer Bottom, designed by women, for women, to compliment the female frame. Features an industry exclusive called Trizar™, a NASA Certified Space Technology woven into every fiber of this garment before it is constructed. Trizar captures body heat inside the garment and re-radiates it back to the user, keeping you warmer. Trizar also diffuses moisture, moving perspiration out of the garment to keep you dry and comfortable. The Deep Space pant delivers scent control through an exclusive combination of Polygiene Odor Crunch+ Stays Fresh, offering the most comprehensive odor protection on the market. This combination tackles odors caused by bacteria coming off the body while simultaneously eliminating outside odors, such as campfire smoke, to help you go undetected.Features and Specifications:• Made in USA• Midweight winter base layer with full body 4way stretch• Flat lock strength seams lay flat against skin• Extreme moisture wicking and quick drying fabric technology• Combined Polygiene anti-microbial and Odor Crunch fabric additive blocking the origins of the odor; providing invisibility• Trizar™ yarn, utilizing technology originally from NASA, captures body heat and regulates temperature keeping you warmer longer• Double anti-microbial - That's right, we doubled down to control the scent caused by perspiration. Trizar's zinc elements that are built into the fibers of the garment and Polygiene's treatment to the finished fabric double up to eliminate anti-microbial smell. • Odor Crunch technology assimilates foreign scents that have attached to the fibers of the garment within minutes, leaving you scent free all day long. • Polyester/Spandex =87%/13%• 50+ UPFNOTE: Fits true to size.