Introducing the OPRO Power-Fit Mouth guard, The most comfortable and retentive self-fit mouth guard in the world. Unlike other traditional boil & bite mouth guards, the Power-Fit comes with our power-cage, and this is an integral part of the Power-Fit. This is a 2-piece system that helps mould the gum shield to the contours of your teeth and gums. Traditional home fitted mouth guards rely on the pressure of you using your fingers to press over your teeth to shape the guard, but the power-cage does this for you alongside its contouring abilities. Using the power-cage applies ever pressure to your mouth guard during moulding giving a tight and comfortable fit around your teeth and gums for amazing retention.