Athletes, this 4-pack of Nivofu mouth guards is exactly what you need for protection during contact sports! Made from soft, eco-friendly EVA food-grade material that's safe, non-toxic, and comfortable to wear without that awful plastic taste. Each guard measures 6.8x5.5cm and easily molds to fit your specific tooth shape and mouth size using the boil-and-bite method - just dip in hot water, bite down, and you've got a custom fit that stays secure during intense activity. The unique groove design allows for free airflow and easy breathing even with your mouth closed, which is huge during cardio-intensive sports. The wider bite pad with rounded edges distributes impact force evenly and protects against chipped teeth, jaw injuries, and concussions. They come in four classic colors (red, green, clear, and black) so you can color-code for different sports or team colors. Each guard comes with its own ventilated storage case to keep them clean and dry between uses - super important for hygiene! Perfect for boxing, football, hockey, basketball, martial arts, rugby, or any sport where facial contact is possible. Having four means you've got backups when one gets lost or worn out, and you can share with teammates if needed. Seriously, protecting your teeth is way cheaper than dental repairs later!