The K&H Thermo-Farm Animal Mat is the perfect all-purpose heated farm mat with an extra rugged design for the rigors of everyday farm use. It can be used with all farm animals and is especially helpful for keeping anything warm. Can also be used to keep a water bucket ice-free, help whelp a litter of puppies, or can be placed in a chicken coop for added warmth in the winter. The K&H Thermo-Farm Animal Mat has so many uses that it’s a must have all-purpose heated farm mat. MET listed. One year limited warranty. Sizes: Small (12.5" x 18.5" 40W), Medium (16.5" x 22.5" 60W), Large (22.5" x 28.5" 80W)