This is an easy-to-mold mouthguard made of EVA material. You can create your own custom mouthguard by simply soaking it in 80°C (176°F) water for 60 seconds. This is a set of 4, but one has been used, so I am selling the remaining 3. It comes with instructions, 3 mouthguards, and 1 case. Price negotiations are not accepted in the comments section. Please use the "Price Reduction Request" button in the lower right corner of the product image. I will respond if possible. If I am unable to accommodate your request, I will gradually lower the price, so please "like" the item and check back regularly. If you have any questions about the product, please feel free to ask in the comments section.