The DMC Front Snorkel - Green is designed to achieve optimum body position and to enable proper arm stroke and breathing while maintaining good pace. The bridge of the DMC Ffront Snorkel sits across the forehead which enables users to comfortably wear swimming goggles of their choice. Breathing through your DMC Front Snorkel promotes relaxed breathing patterns and, when performed consistently, helps swimmers to relax their style, improving endurance and speed capabilities as swimming becomes easier.