Financial Buyers in Takeovers: Focus on Cost Efficiency

A new buckle structure on the two sides of a diving mask, these buckles are used to connect to the strap; the structure includes a frame on each side of the mask frame, a setting hole on the frame, a holder fixed and a fixed cover of the setting hole, a button on fixed cover, the strap goes between holder and a roller, the stopper on the button allows the users to adjust the strap; the structures allows the users to lose the strap by pressing down the button, also the strap can rotate within a small angle due to the holder structures.