These Bare Sports Ultrawarmth Base Layer Pants are a Womens size S. They are brand new but have no tags. From a smoke-free environment. 230-g Omnired Infrared stretch fleece has smooth face for easy layering, fleece-brushed back for superior warmth and moisture-wicking performance with antimicrobial odor control Quick drying characteristics back on the surface and when suit is vented or removed Flatlock seams to minimize chafing High warmth-to-weight ratio delivers the exact warmth and breathability required for dive applications Contoured waistband with a continuous drawcord Seamless crotch for comfort Spandex stirrups keep pants in place while donning mid layer or drysuit Ultrawarmth Base Layers provide more endurance, faster recovery and increase thermal energy with Ultrawarmth Omnired Infrared fabric―technology determined by the FDA as a heat recovery medical device to. Ultrawarmth Base Layers seal in warmth and create a protective heat barrier. Advanced stretch-breathable fabric draws moisture away from the body to create a dry zone, while moisture is dispersed over a larger surface for quick evaporation. Ultrawarmth Base Layers are essential to a diver’s drysuit system, and can include a mid-layer for additional warmth, keeping divers warmer and more comfortable for longer.