Description: ※【Durable Material】420D TPU Coated Cloth Inner Shell & 1050D Cordura Outer Shell & TPU Connector & ABS Safety Valve & Copper Nickel Plated Air Eye & Rubber Colorectal Tube. ※【Proper Size Design】Donut(L x W): 25.2 x 16.93inch; Low Pressure Length: 21.65inch; Rubber Colorectal Tube Length: 11.81inch; Threading Slot(L x W): 5.12 x 0.28inch. ※【Full Set of Diving Donut Wing Single Tank】Comes with 30lbs Donut, Outer Shell, colorectal tube, K-valve and low pressure hose. ※【Easy to Use】Removable soft bracket is provided for cylinder support and 4 threading slots in the middle are convenient for using. ※【Fits for Diving】Great Scuba Dive Tech Equipment, Provides you with excellent buoyancy control while you are Scuba Diving & Snorkeling. Specification: Material： Inner Shell: 420D TPU Coated Cloth Outer Shell: 1050D Cordura Connector: TPU Safety Valve: ABS Air Eye：Copper Nickel Plated Colorectal Tube: Rubber Color: Black Size: Approx. Donut(L x W): 64 x 43cm/25.2 x 16.93inch Low Pressure Hose Length: 55cm/21.65inch Rubber Colorectal Tube Length: 30cm/11.81inch Threading Slot(L x W): 13 x 0.7cm/5.12 x 0.28inch Package Includes: 2 Piece30lbs Diving Donut Wing Single Tank Note: Please allow slight difference due to manual measurement. Color might be slightly different due to different displayers. Thanks for your understanding.