These heated gloves are made of 100% polyester knit laminated w/a TPU membrane. These durable gloves are waterproof, anti-slip, and breathable. The battery heated gloves are equipped w/2 independent battery boxes, which is powered by 6xAA batteries (not included). It will provide you w/up to 6 hours of warmth. The independent battery box is very safe and convenient to use in daily life. The electric heating gloves are great for outdoor activities in winter, such as fishing, camping, snowboarding