A warp-knitted spacer fabric has a first and a second planar warp-knit layer that are joined together by spacer yarns. The first warp-knit layer is formed by a first yarn system having a first pattern and a second yarn system having a second pattern. The first pattern is a modified pillar-stitch in which the yarns of the first yarn system form pillar stitches in alternating sequence in the working direction and are guided without formation of stitches, and the yarns of the second yarn system are each guided over at least two adjacent stitch wales and running in the working direction. The second warp-knit layer has openings formed by a plurality of stitches.