Aqua-speed Jet snorkel col.11 Properties: Aqua-speed Jet Snorkel, col. 11. The Aqua-speed Jet snorkel is perfect for freedivers. The Ultra Dry system ensures air is delivered to the mouth without taking in water. It features a chamber at the top, preventing water from entering the breathing hole. The mouthpiece is made of the highest quality materials. Its shape ensures comfort and convenience. It features a ribbed silicone connector. The connector's inner surface is flat. The QuickRELEASE mask attachment system allows for attachment of a mask strap and height adjustment. The main chamber is made of a slightly flexible and durable material. It has an elliptical cross-section that reduces water resistance while swimming. This product is designed for both women and men.