Feature●Sample design, good accessory for scuba diving activities. Mechanically balanced for smooth and easy inhalation and exhalation.●Ergonomic design, comfortable and easy to bite. Under-chin exhaust system, directing bubbles to the sides.●Lightweight and portable, easy to install and use.●Fine workmanship, ideal replacement for the old or broken one.●Made of good quality resin and silicone materials, soft, solid and durable.Description