I purchased this last month, but I no longer need it. It is new and unused. Venum Challenger Mouthguard - Red/Black Venum Challenger Mouthguard - Black/Black High protection is necessary during intense training. The Venum Challenger mouthguard is newly improved to fit snugly against the teeth and jaw, preventing injuries and improving performance. Biting the lower rubber frame absorbs impact and disperses it in the direction of the strongest teeth.