From iThinkSew:
The process of making these women’s room shoes is fairly simple because like mary janes they have no laces. Although the upper overlapping part is a bit tough to sew through due to its thickness, overall these shoes can be made without too much effort. Quilting cotton is used for both the inner and outer fabrics of the purple shoes, and linen is used for the outer fabric of the beige shoes; in both shoes fusible fleece is used for the interfacing. Intermediate or beginner sewers that have no difficulty sewing curves will be able to make these shoes without problem.