As shown and described. Soft fluffy sherpa-like fleece on outside (helps trap heat), interior pad has reflective material (helps reflect heat), slim zipper, slightly grippy bottom. Basically takes the animals heat and helps maintain it by trapping heat and reflecting it back. If animal or environment is actually very cold, then this may not help. For that, you may want to add under it a low watt heated pad . I did this for my elderly cats. They had their favorite place to sleep, and always had both options available 24/7. Good size for any cat and smaller dogs, or larger dogs that dont need their entire body on it. I bought the larger 29" x 19" because I figured if I dont use it for my cats, then my southern rescue dog would appreciate it during the cold northern winters. I can put it on my lap or underneath me if no one liked it. But, My cats liked it just fine, they like it tucked into one of their existing beds. However, I also tried it for my dogs, and as anticipated, my 50 lb mega mutt loves it. I usually put a nice blanket down for her on the couch, similar in material as this is, but it has brought her extra pleasure and comfort to have this slim pad to curl up on whether the blanket it there or not. This isnt my first self warming pad. I have others I have used through the years, and wanted another as the others are in specific locations that the cats sometimes use. This one is different in the top material is fluffy, and more flexible than the other two I own . Both styles are good, this one is pricier than the other I linked to. I think if I bought more, it would be this one. I like the added softness and flexibility, where as the other is slightly more firm. Depends on needs and where it is placed. This is neat. I will feel the warmth after she leaves it. I feel it on the top side as well as the underside. It isnt hot or anything, but it really helps the animal to keep their heat. So no loss but no major gain either. I wouldnt use these necessarily for an outdoor animal on its own. Maybe a very low wattage heat pad, then this with it if it is really cold out. Animal needs to already have some heat of their own in order for this to make sense. They cant heat up the pad if they arent warm. If elements strip away the heat, then this may not help them. But for indoor use, especially cooler environments (we keep our house on cooler side in winter) this can help immensely to keep them comfy. Or for those that simply like warmer sleeping arrangements.
