V-ribbed belt

A V-ribbed belt comprising

• an extension layer that forms a belt back face;
• a compression layer provided on one side of the extension layer;
• and
• a tension member that is embedded between the extension layer and the compression layer and extends in a belt circumferential length direction,
• wherein the compression layer has a plurality of V-shaped ribs formed to be extending in the belt circumferential length direction and to be a frictional power transmission surface with a pulley, the frictional power transmission surface being covered with a knitted fabric, and
• wherein the knitted fabric is knitted out of a polyester-based composite yarn and a cellulose-based natural spun yarn, the polyester-based composite yarn being a bulky yarn, and a knitting ratio of the cellulose-based natural spun yarn being not less than a knitting ratio of the polyester-based composite yarn, and
• wherein the bulky yarn contains at least one of the group consisting of composite yarns (conjugate yarns), covering yarns, crimped yarns, woolly textured yarns, taslan textured yarns, and interlace textured yarns.