Abstract: A power transmission belt of elastomeric material and method of making same, wherein a load-carrying section and a plurality of fabric plies are disposed in the elastomeric material. Each ply is disposed on a rubber type embedment sheet or is embedded in a rubber type matrix. Each ply is composed of filaments crossing in a woven manner. A first group of filaments are oriented essentially transverse to the running direction of the belt, form weft filaments, and are of a material having a high strength, high resistance to bending and high resistance to temperature. A second group of filaments are oriented in the running direction, form warp filaments, and are of a material that has a lower strength and resistance to temperature than the first material.