1.Football mouthguards are easy to use, easy to fit, easy to shape, suitable for different tooth conditions and sizes, providing a comfortable fit, extended use and can provide full range of protection for your teeth and tongue.It helps keep the teeth in place. 2.The baskball mouthguard and the boxing mouthguard are use food-grade EVA materia, llightweight and strong materia, highly malleable when heated, quickly and easily mold used after hot water, larger size make it have a wide range of applications, exoskeletal shock frame provides full mouth protection during the hardest impacts, make your used comfortable. 3.Protective material: The mouth guard is made of comfortable EVA material. The football mouth guard is an extremely durable, soft and product. Each mouthguard comes with a strap to allow the mouthguard to be worn with or without straps. 4.Fresh air: The gum shield comes with its own air duct for unrestricted breathing, while the occlusal lock prevents you from moving while clenching your teeth.Package:4 Sports Mouth Guard, 4 Case.