MOMWDXW New 2 pairs Electric Heated Socks for Men & Women One size fits all, super elastic and stretchable for adults, men and women (6-12 USA size). One set of socks is new in box, 2nd set is new without box. Comfortable Heated SocksThe new generation of upgraded heated socks are made of higher quality polyester blend material, perfect for supporting your feet, more breathable and sweat-absorbent, cozy and durable, allowing you to enjoy the warmth of your feet in winter. Long Heating Time The upgraded battery heated socks can keep your feet warm for up to 5 hours (without batteries), the heating element covers the entire instep, and the heat cycle technology is used to realize fast warming. (Ambient temperature and battery quality will affect the heating efficiency) Battery Heated Socks Our heated socks are equipped with two battery compartments, each powered by 3*AA batteries (not included), easy to use, you just need to put the 3*AA batteries into the battery compartment correctly, and then press the switch, after a while you will feel the warmth, even in the place where there is no power supply, just replace the batteries, you can also continue to feel the warmth. 100% polyester Purchase with confidence from Top Rated Seller, Fast Shipper, Posh Ambassador II Everything in my closet I am open to reasonable offers.