Double-sided fabric and method for knitting double-sided fabric

A double-sided fabric integrally knitted from a first face yarn and a second face yarn, wherein the double-sided fabric comprising:

• a knitted fabric layer, consisting of a plurality of loops knitted from the first face yarn together with the second face yarn, wherein each of the plurality of loops comprises both of the first face yarn and the second face yarn;
• and
• a knitted sack, comprising a front sack layer and a back sack layer divided from the knitted fabric layer, the back sack layer spaced apart from the front sack layer to define a space of the knitted sack between the front sack layer and the back sack layer,
• wherein the front sack layer consists of a plurality of front loops knitted from the first face yarn of the knitted fabric layer, and the back sack layer consists of a plurality of back loops knitted from the second face yarn of the knitted fabric layer,
• wherein a thickness of the knitted sack is formed by a continuous cord material which is inserted into the space of the knitted sack and extended in a zigzag manner between the plurality of front loops and the plurality of back loops, and the continuous cord material is isolated in the space and separated from the plurality of front loops and the plurality of back loops, and
• wherein when viewing from a first side of the double-sided fabric, the continuous cord material is disposed behind the plurality of front loops and in front of the plurality of back loops;
• and when viewing from a second side of the double-sided fabric opposite to the first side, the continuous cord material is disposed in front of the plurality of front loops and behind the plurality of back loops.