The SV2 is a dependable, high performance snorkel that redefines how a snorkel works and helps divers extend their adventure. Small and versatile, the SV2 is comfortable to use and extremely functional. The SV2 includes a Scupper Valve lower section with a sleek semi-dry top. The semi-dry top employs horizontal vents engineered to diffuse splashed water that would normally freely enter the snorkel top, resulting in less water, making it ideal for rough and choppy water conditions. The Scupper Valve snorkel design works just like a one-way-valve, allowing water to flow past the mouthpiece and out the purge valve for effortless clearing. Additionally, the SV2 Snorkel comes with a quick-release snorkel keeper that has a 30° rotation/sliding adjuster and has a removable and replaceable silicone mouthpiece.