Nowadays, people need to equip different backpacks for different occasions or moods, which brings great troubles to life. The main body of the traditional backpack and the straps are made in one piece, which makes it very inconvenient for people to carry and unload the backpack. It is necessary to remove the straps and the main body of the backpack to further separate the straps from the main body of the backpack. Although the separation of the straps and the main body of the backpack has been solved The purpose, but the operation is cumbersome. So there is an idea of creating a new backpack concept, which is a kind of buckle that is convenient for insertion and removal of the strap and the main body of the backpack, which will bring greater convenience to people.

The plug buckle in the prior art is generally composed of a male buckle and a female buckle, and the male buckle and the female buckle are respectively provided with a plug joint and a plug slot corresponding to the plug joint, and a plug joint is provided at the front end of the plug joint. The guide head and the guide groove, as well as the insertion guide opening and the guide edge are provided at the front end of the insertion groove, and a plurality of magnets are arranged to assist positioning. It is easy and natural, and this invention weakens the strap function of the backpack, reduces the cost, and can replace the backpack more freely. In addition, the Dual Sternum Strap Adjuster can also be applied to different products instead of backpacks. For example, the slots can be attached to skateboards, badminton racket covers, small surfboards, swords, shields, etc., so that the items can be easily adjusted.