Netting in the form of an extruded plastic mesh is provided for wrapping round bales of crop material. The netting includes longitudinal strands and tranverse strands fused together at intersecting joints to define rectangularly shaped openings in the netting. The minimum elasticity of the netting is about 15% before tensile failure in a longitudinal direction in order to prevent the netting from shrinking in a transverse direction. The netting thus maintains its original width dimension when pulled lengthwise.