The Wide Band Pure Silk Slip Midi Dress in Prism Check. A modern print, designed to emulate the refraction of light through a prism. A classic slip shape with a wide-band V-neckĀ and spaghetti straps. The Wide Band Slip Dress is expertly designed with a wide back panel for a flawless fit. Straight through the body, the slip falls into a full-length skirt.