Small: 3.5 X 4.5 inches. Fits up to women's shoe size 8, men's 6.5
Large: 4 X 5 inches. Fits up to women's shoe size 11, men's 13

Thickness refers to the denseness of fur and the heaviness of leather. All of our foot warmers are effective, with the best warmth coming from the thick. We offer the following choices based on the amount of room in your footwear.
Regular thickness is the balance between Slim and Thick and generally fit in most footwear. They are our standard for warmth.
Slim are thinner and designed to fit in tight spaces with less room, such as snug shoes, ski boots and skates.
Thick thickness offers ultimate warmth and takes a minimal of extra space in your footwear. Very warm and toasty!
Care
Take your Foot Warmers out of your socks after each use and lie flat. Shake and give a little rub to fluff up. If the fur gets damp, shake out the excess moisture, gently shape the leather, and leave out to air dry on a flat surface. Avoid getting wet and prevent contact with direct heat and lotions, perfumes, etc.
We offer a Natural Fur Cleaner, to keep Aurora Heat™ fresh.