Our heat pads make the perfect gift. Made from 100% cotton and organic rye, beautiful to look at and well-made. Women-owned, handmade, ethically sourced and manufactured. From our fabrics down to the thread, we only use high-quality, naturally occurring materials. No plastics or synthetics, ever. This way, you're save to pop your heat pad in the microwave for ASAP comfort. Stays warm for 45-60 minutes and last for years to come. Can be enjoyed hot or cold (freezer). Materials: 100% Cotton (cotton & flannel heat pads) 100% Organic rye berries (USA grown) Measurements: 7 in x 5 in How to use: Heat in your microwave or conventional oven to desired warmth and enjoy. Can also be cooled in your freezer for cool comfort* *Instructions can be found on the back of the product sleeve natural heat pad - organic heat pad