The CAI Semi-Dry Snorkel from Sherwood utilizes a created shield which acts like a force field against waves, wind, and splashing from entering the snorkel tube. The CAI Snorkel Tube is contoured for hydrodynamic when surface swimming you’ll forget it even there. The corrugated flex tube and removable, replaceable mouthpiece is made from 100% high quality silicone for comfort and fit. The corrugated flex tube design lets the mouthpiece swing away from your mouth which makes it great for Scuba. If water does enter the breathing tube the deep reservoir below the mouthpiece with one-way purge valve will keep the mouthpiece dry for easy breathing. The CAI Semi-Dry Snorkel from Sherwood comes with a quick-disconnect (QD) snorkel keeper for convenience. You can detach your mask quickly from the CAI snorkel for safe storage of your mask in the mask box. The CAI is available in multiple colors.