Modal fabric is the exaction of natural plants. Ultra soft, airy, silky smooth, skin friendly and breathable. Washes well and stays in place. This thermal has a luxuriously soft hand feel, superior heat retention & moisture management properties for all day comfort. The updated brushed texture is now even softer. Soft, stretchy fabric packed with bio-warming, insulating, moisture-wicking, quick-drying, and shape-retaining comfort features. A warm layer with brushed 100% organic cotton on the inside. Can be layered with pants or worn as innerwear. No Bleaching, No Iron, Regular Washing