The socks fit easily in my shoes, boots, and slippers. With these socks, my toes stay toasty without being too hot. I normally use the toasty toes which i find to be uncomfortable when they slide around.

They do only heat on the top of the foot but they keep her feet from freezing so it works. Our family room is downstairs and my feet were always cold. The batteries last up to 6-7 hours on the lowest mode.

The recharging system is great. Rechargeable battery option is great but i wish it had aa or aaa battery to swap out quickly. They are removable to washing & recharge fairly quickly.

The company stands by there product. Worth every penny. These are a dream come true!

One only heats up periodically and the other has seemed to not get as warm each time i've used. However, the battery design has flaws. Plugged into socks but no heat generated in either sock. Heat isn't that hot on high.