Adjustable head bracket makes for quick strap adjustment and a universal fit. Stays in place for all competitive strokes, including flip turns. Curves around head to reduce drag and promote proper body position. Be comfortable in the water, breathe easily, and swim with perfect balance. Introductory Center-Mount Technique & Training Snorkel. The FINIS GLIDE snorkel is an introductory center-mount technique and training snorkel ideal for fitness and team training. The center-mount design allows you to be comfortable in the water, breathe easily and swim with perfect balance. A hydrodynamic tube curves around head to reduce drag and promote proper body position.