There is no good or bad point of dual sternum strap adjuster, but according to the different functions. Choosing the right dual sternum strap adjuster can make the dual sternum strap adjuster play its biggest role. The sun-shaped buckle is called the sun-shaped buckle because its shape is similar to the sun-shaped buckle. With the continuous improvement of its design, the sun-shaped buckle is not only a sun-shaped buckle, but more shapes and functions. The sun-shaped buckle has been developed. 

The most standard and most original dual sternum strap adjuster, the middle block is very thick, and has a non-slip groove to prevent the webbing from slipping, and the quality is sturdy. It is said that this is a Japanese-style buckle that meets military standards. It is generally used in the external hanging system of backpacks, and is generally used in conjunction with non-adjustable buckles to adjust the webbing so that the length of the webbing is suitable for individual needs.
The two-way adjustable sun-shaped buckle, also known as the butterfly-shaped sun-shaped buckle, is usually also used on the strap to connect the chest strap. The horizontal strap with this kind of buckle is generally a webbing sleeve, which covers the strap, not just the vertical webbing of the strap. The length of the webbing on both sides can be adjusted, so there is no need to worry about the deformation of the backpack because the webbing is too tight. It is generally used on large-capacity bags.