Note: The color of the product we ship is the color in the first picture, and the specification and quantity are shipped according to the quantity and specification described in the title. If you need to change the color or style, you need to contact us within 12 hours after placing the order. Our product description: Battery heating socks, suitable for cycling, motorcycle, hunting, fishing, camping, etc. Product Features: Brushed soft comfort for feet, elasticity. The socks are free size, perfect for both men and women. The socks with battery box can be as a nice warm heart gift for Family, Parents, Friend in Cold Weather. Perfect indoor warm feet gear for cold weather. Also fine for outdoor athletic activities-outdoor trail. Specifications: Color: black Size: one size Product material: cotton Battery quantity: 2pcs battery for each sock, 3pcs battery for each sock (optional) Battery: AA battery (not included) Package size: 130 * 120 * 60mm / 5.1 * 4.7 * 2.4in Package weight: 156g / 5.5ounce Packing List: 1 * Pair of Socks 2 * Battery Box(without battery) Note: Because the model and display effect of the monitor may be different, there may be slight differences in color, and the size is manually measured, there may be an error of 1-2cm, please understand.