Disposable Slippers Medium (Blue) - These disposable slippers are made from Polyurethane foam and have a Non-Slip Base. They are odourless and non-allergenic. Available in four colour-coded sizes in economical packs of 20 pairs, Small (Gold): 11.5 -2, Medium (Blue): 2 - 5, Large (Avocado): 5 - 8, Ex-Large (Brown): 8 - 11 Sizes available are the four larger sizes in the illustration.