Foot warmers provide luxurious warmth and comfort! The size fits up to a Men’s shoe size 10 with room to move your feet. Whether you’re cozying up on the couch, watching your favorite movie or using the foot warmer just to warm up, you will not be disappointed! The foot warmers are made with flannel fabric outside and minky fabric inside, however they are fully reversible for added comfort! Heavenly Hot Packs are fantastic when heated up, or tossed in the freezer for some cooling effects. The hot packs are filled with jasmine rice, which retains heat for lengthy periods of time without causing any odor or allergens. The rice is great filler ensuring the hot pack can contour to your body and is not rough or stiff. The fabric choices chosen are flannel because of the softness and durability of the fabric. How to use???? FOR HOT: Microwave for 30 seconds increments. FOR COLD: Place in plastic bag, freeze. Cleaning Instructions: simply spot wash with a damp cloth or baby wipe. You cannot actually wash your hot pack as the rice will disintegrate. Rest assured, any germs that the hot pack does accumulate, die in the microwave because of the heat it produces.