polymeric layers comprising an array of blind openings extending into the first major surface , but not through the second major surfaces . the blind openings each have a series of areas through the openings from the first major surface towards the second major surfaces ranging from minimum to maximum areas , where for at least a majority of the blind openings the minimum area is not at the first major surface . at least a portion of the first major surface comprises a first material and extends up to , but not into the second major surface . at least a portion of the second major surface comprises a second , different material . methods for making the polymeric layers are also disclosed . polymeric layers are useful , for example , as components in personal care garments such as diapers and feminine hygiene products . they can also be useful for filtering and acoustic applications .