[ 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. color:Black Material:nylon size:Inflated . 38 x 64 x 15cm Package Contents: 1 x Diving Donut Wing Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.