I ordered this product for my Lab who has severe reactions to thunder and fireworks. First off, the instructions for fitting the wrap straps around the rear legs is not clear. Second, once I figured that out, he couldn't walk. It was as if his rear legs were paralyzed. Needless to say, I wasn't pleased with the wrap. I have since gone to the Adaptil pheromone collar and ProQuiet tablets with great results. Finally, their 100% guarantee is not as it would seem. You have to return the wrap, in it's original condition (as if new) and in the original packaging. This is great if you haven't used it on the dog. But in order to find out it doesn't work, the dog has to wear it for awhile. That makes it difficult to meet their return criteria.