One pair accommodates widths from "4E to 7E equivalent." Recommended indoor shoes for those with "high insteps," "swollen feet," or "edema." The large Velcro closures open wide and can be secured anywhere. Removing the insole provides an even more relaxed fit. They are fully washable, keeping your shoes and feet clean, and allowing for long-term use. ◆ Shoe Width: 4E (Equivalent to 4E-7E) ◆ Materials: Upper: Synthetic fiber Sole: Rubber ◆ Size: Heel Outer Sole: Approximately 20mm