Flexible Regulator for Water Sports, Diving Accessories, Black, 72cm. Note: This product page only sells the 72cm Black color. If you need other sizes/colors, please refer to the Questions & Answers section. Description: Made of soft silicone material, safe and hygienic. Keeps the octopus regulator where you need it. Allows the regulator to be secured under the chin. Convenient and portable to use. A must-have accessory for all divers: deep diving, snorkeling, etc. Specification: Material: Silicone Size Chart: Size: Circumference - 62cm/24.41in, Diameter - 20cm/7.87in, Small Ring - 5cm/1.97in; Circumference - 72cm/28.35in, Diameter - 23cm/9.06in, Small Ring - 5cm/1.97in; Circumference - 82cm/32.28in, Diameter - 28cm/11.02in, Small Ring - 5cm/1.97in Package Includes: 1 Piece Diving Regulator Note: 1. Please allow slight error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wishing you a wonderful online shopping experience!