The gel layer mouth guard is specially designed to protect your teeth, jaw, joints and gums from harm. It is designed from the beginning to the end to fit perfectly with your teeth for maximum protection. We have used an advanced gel layer for increased comfort and added an exclusive breathing channel for improved performance. We designed the mouth guard to be one size fits all adults. So men, women and children can use it for boxing, rugby, lacrosse, boxing, football, hockey, basketball, flag football, soccer, roller derby, hockey, lacrosse, Brazilian Jiu-Jitsu, martial arts, Muay Thai, Jiu-Jitsu, karate, wrestling and more. All athletes use this soft gum guard. : It can also be used with braces to protect your teeth. This mouth guard is made of rubber or food grade, which is lightweight and easy to carry as well. Customers are our priority, so customer health is the most important thing for us. We have used the best materials in this product. Designed with premium Eva material, free of latex, formamide, BPA and phthalates. Your health is very important to us, so you get only the best materials for both floors.