Based on the first ever center-mount snorkel designed and patented by FINIS, the Original Swimmers Snorkel takes on that legacy with unique improvements. An essential training item, eliminates the interruption of turning your head to breathe, allowing you to focus on stroke technique and relax and in the water. Maintain body alignment and improve stroke efficiency in butterfly, breaststroke and freestyle. The one-way purge valve allows water to be easily removed from the mouthpiece after underwaters. Based on the first center-mount snorkel created and patented by FINIS Stays in place for freestyle, butterfly, and breaststroke (including flipturns) Comfortable mouthpiece made of soft medical-grade silicone Adjustable head bracket for quick strap adjustments One-way purge valve eliminates water from tube