Bed Buddy, Volt, and Dr. Scholl's are brands that sell foot warmer slippers. They are available for purchase online from Amazon.com, Etsy.com, and Brookstone.com, or in stores such as Target, Meijer and Wal-Mart. Foot warmer slippers are designed to insulate feet to keep them at the wearer's preferred temperature .
Many of the foot warmer slippers heat up by themselves through built-in heat that is remote-controlled, as is the case with the Volt Heated Slippers from Brookstone.com. These slippers contain rechargeable batteries, and each charge lasts anywhere from three to 10 hours of soothing warmth. The wearer may choose between four different power levels, depending on how warm he would like the slippers to be.
Other foot warmer slippers require pre-heating through warming the slippers in a microwave or oven for a short period of time, as is true for the Luxury Herbal Slippers from UncommonGoods.com. Both types of slippers have thick insulation designed to keep the heat in and the cold out, or in some cases, vice versa. The Luxury Herbal Slippers can also be placed into a refrigerator or freezer to keep feet cold. These slippers are used for different types of therapy, depending on whether they are heated or chilled.