Performance Fit A standard boil-and-bite mouthguard can feel bulky, restrict airflow and be difficult to fit accurately. Gold changes that. Designed for athletes who want the highest-performing self-fit mouthguard, Gold combines a slim, anatomical design with OPRO's patented Fitting Tray technology. The tray helps guide the mouthguard into the correct position, allowing it to mould evenly around your teeth and create a secure, comfortable fit the first time—without the need to remould. Your Fit in Minutes Heat your mouthguard in hot water for 30 seconds. Place it into the patented OPRO Fitting Tray and bite down for 60 seconds. As you bite, the Fitting Tray directs force evenly across the mouthguard, helping it mould closely around your teeth for a secure, personalised fit. The result is a slim, secure and comfortable performance-fit mouthguard with advanced dual-layer protection, ready in minutes. Built for Performance Every detail of Gold has been engineered to help you perform with confidence. Its slim-profile design sits comfortably in the mouth, making it easier to breathe, communicate and stay focused during play. Responsive fitting fins create a secure personalised fit, while the dual-layer construction absorbs and disperses impact when it matters most. The result is outstanding comfort, reliable protection and a mouthguard you'll hardly notice you're wearing. Trusted by the World's Best Designed by leading sports dentist Dr Anthony Lovat and made in the UK, Gold combines OPRO's patented fitting technology with over 30 years of mouthguard innovation to deliver exceptional fit, comfort and protection. Every detail has been engineered to create a slimmer, more comfortable fit with easier breathing, clearer speech and reliable high-impact protection—helping you stay focused on your performance. OPRO mouthguards are supplied to and trusted by professional athletes and elite sporting organisations, including England Rugby, GB Hockey and UFC, who demand the highest standards of fit, comfort and protection.