Dressings for tissue treatment, which may comprise a first layer and a second layer. The first layer may comprise or consist essentially of a first plurality of perforations formed through the first layer and arranged in a first pattern of rows. Each of the first plurality of perforations may be parallel to a first direction. The first layer may comprise or consist essentially of a second plurality of perforations formed through the second layer and arranged in a second pattern of rows. Each of the second plurality of perforations may be parallel to a second direction. The first plurality of perforations and the second plurality of perforations may be configured to open in response to a pressure gradient across the first layer. A second layer may comprise or consist essentially of a manifold, and coupled to the first layer.
