Double-layer fabric casual pants with good air permeability

The utility model relates to a pair of double-layer fabric casual pants with good air permeability, and aims to solve the technical problems that an existing bandage needs to be knotted and fixed manually during use, the waistline adjusting effect of the bandage is poor due to the fact that the position of a knot is difficult to grasp during knotting, and in addition, a longer section of the bandage is exposed out of the casual pants during use and is not attractive enough. Comprise a casual pants body formed by sewing double-layer breathable fabric, knee pads are installed at the knee positions of the casual pants body, an elastic waistband is sewn at the waist position of the casual pants body, a bandage hole surrounding the elastic waistband by a circle is formed in the elastic waistband, and a bandage is connected in the bandage hole in a penetrating mode. A bandage adjusting mechanism capable of rotatably storing and adjusting the bandage is mounted in the middle of the front side of the elastic waistban