Impact Custom Professional MMA/Boxing/Muay Thai Mouthguard Black S/M Wear it like the pros! Custom fitted with our professional grade fast and easy to use impression kit , includes paid postage to dental lab. 100% perfect fit guaranteed Maximum protection with minimalist feel for athletes of all ages and levels. At 6-7mm thickness, it assures heavy impact absorbance, and allows optimal oxygen flow to speak clearly and communicate with ease HOW IT WORKS: Once we receive your order well ship your Super Simple Fit Kit the next business day. With the kit in hand, youll make an impression of your teeth right at the kitchen table. It only takes about 2 1/2 minutes to complete. Follow the easy directions included with your kit. Once its done send your impression back to Impact using the postage paid label provided. Upon receipt of your impression, well have one of our craftsman create your guard and send back the finished product Finished product is BPA free, made in the USA, Over 15,000 mouthguards specially handcrafted