The Truform stocking donner is an application aid assist device designed to help correctly and easily apply compression socks hosiery and stockings. Easier application helps improve compliance and makes the therapeutic support hosiery experience comfortable and effective. Both REGULAR and TALL SIZE donner only fit Truform brand stockings sizes: Small Medium Large and X-Large. The LARGE SIZE donner (sold separately) has a larger width 6-inch donning zone but only fits Truform brand stockings sizes 2X-Large and 3X-Large. The Tall donner has the same size 4-inch "foot width" donning zone as the regular donner but has a taller arm height and depth. Tall Size is generally used by taller height people and should not be confused with the length of stockings. Confirm sock size against product dimensions using size chart shown in in additional images.