Soothe & relax sore feet with calming lavender scent & moist heat. Use on their own or indulge further by liberally applying sonoma lavender foot balm to your feet, insert first into a plastic bag and then into our warm footies. A relaxing spa treatment at home! Heat in the microwave or tumble dryer; or chill in the freezer! The ultra-soft covers can be removed and thrown into the wash. One size fits all up to ladies size 10.