Alright, let's talk serious protection! The OPRO Gold Level mouth guard is what the pros use for boxing, MMA, BJJ, Muay Thai - you name it. Getting that perfect custom fit is surprisingly simple. Just grab your mouthguard, the fitting tool, some boiled water (freshly boiled, 100°C!), and follow the steps. Pop it in the water, use the fitting tool with its flex technology, bite down hard, and you're good to go. Well, almost - cool it down in cold water for 20 seconds first! What's really cool is you can remold it if the fit isn't perfect the first time. It's got this hi-flow gel design so you can actually breathe and speak normally, which is a game-changer during intense matches. No latex or BPA either, which is always a plus. OPRO supplies the UFC, USA Rugby, and plenty of other pro organizations, so you know it's legit. Plus, you get a 12-month warranty and up to $15,000 dental coverage. Whether you're into wrestling, football, or martial arts, this mouthguard has your back (and your teeth!). For cleaning, skip the toothpaste and grab some OPRO cleaning tablets to keep it minty fresh. Junior sizes work up to age 10, then it's time to upgrade to adult.