Warmers | Backwarmer (Women's, Medium Thermal Insulation)Stay warm, stay comfortablewithout sacrificing movement. The Womens Medium Insulation Back Warmer is crafted from a plush Angora wool blend, delivering targeted warmth where you need it most. Designed for everyday wear, it provides just the right amount of insulation to keep you cozy while staying discreet under clothing. Product Details: Quality craftsmanship: Crafted from 27% Wool, 23% Angora, 23% Polyacryl, 20% Polyamid and 7% Elastan fabrics.