My feet needs to be warmed up
Cold feet can cut the best day short, and a shoe usually has room for only one sock. You choose heated insoles when you want to warm your feet in the shoes you already own: you cut them to size, power them over USB 5 V, control them with a remote and, on some models, with an app. Heated socks go on instead of ordinary ones, also with a remote, and you machine wash them once the battery is unplugged. At home, heated slippers do the job: you switch them on with one button and can wash them too.
Insoles and socks have their own USB power system, separate from the batteries of jackets and gloves, so you buy them as an independent set. A full overview of the models and their features is in the Heated insoles and socks category.