58% Cotton, 38% Rayon, 4% Spandex Imported Pull On closure Machine Wash STYLISH DESIGN WITH ADVANCED FABRIC: 58% Cotton, 38% Rayon, 4% Spandex. The thermal cotton-poly blend offers numerous benefits, ensuring you’ll stay warm and dry all day long. Rib-knit cuffs make sure you stay warm without restricting mobility. Perfect as your first layer for the coldest winter days in backcountry powder, but thick enough to be worn on its own during a late fall camping trip or early spring morning jog. Designed in the USA HEATING TECHNOLOGY: Multi-zone heating elements: 2x Back, across your core deliver even warmth. The rib-knit cuffs keep it securely in place no matter what you’re doing from skiing, snowboarding, or any of your favorite winter activities. LONG-LASTING WARMTH: 10 hours of heat. Temperature control: First, the built-in touch control button. With the simple push of our control button, you can choose from 4 heat settings indicated by colored LED or use our MW Connect App ADVANCED FABRIC TECHNOLOGY: The Thermick Heated Baselayer keeps you in the field and doing what you love longer. The thermal cotton-poly blend offers numerous benefits, ensuring you’ll stay warm and dry all day long. Additionally, it’s an ideal fabric for layering as part of your outdoor equipment. LONG WARMING: Heat in seconds with 7.4v 2200mAh Lithium-Ion Battery; The USB port for charging smartphones or other mobile devices. EASY CARE: Machine washable. The heating elements are designed for machine wash cycles. Advanced fabric and heating elements are safe for hand and machine washing Show more