Impact Mouthguards has received positive feedback from users. Customers appreciate the custom fit and comfort of the mouthguards, noting that they fit perfectly and provide excellent protection. Many users have praised the customer service, highlighting the company's responsiveness and willingness to address any issues. Athletes from various sports, including MMA, hockey, and basketball, have shared their satisfaction with the product's performance and durability. Some users have mentioned that the mouthguards are a bit more expensive than regular options, but they believe the quality and fit justify the cost. Overall, Impact Mouthguards is well-regarded for its high-quality products and excellent customer support.