#1 Mouth Mount, Used by GoPro Athletes Kelly Slater and Anthony Walsh | Breathable Scuba Style Mouthpiece AND Bite Supports for stable footage | Big Air Channel for easy breathing. Neck Lanyard Included to Keep Your GoPro Close. It has been improved and strengthened for 2015. | Best design for comfort. Dropdown design allows you to use it for hours without strain. Compatible with all GoPro models. GoPro Camera and Floaty Back Sold Separately | PATENT # 9383630 (CAMERA MOUTH MOUNT) Don't settle for anything less, without bite supports you will get unstable videos.