These rechargeable heated socks feature a "one size fits all" design that accommodates US sizes 6-14, making them suitable for most people, including seniors, men, and women, without the worry of incorrect sizing. Equipped with two high-capacity batteries, they offer up to 8.5 hours of continuous heating, eliminating concerns about short battery life. The socks provide three heating modes: High (140°F for 4-4.5 hours), Medium (122°F for 5.5-6.5 hours), and Low (104°F for 7.5-8.5 hours), catering to different temperature preferences. With an all-encompassing heating design that quickly warms both the soles and insteps, users can feel warmth within seconds of activation. Perfect for activities like motorcycling, hunting, camping, skiing, and hiking, they make an ideal winter gift for husbands, wives, dads, moms, grandparents, or anyone with cold feet.