Designed with heavy-duty nylon, Westcott Egg Crate Grids are a fast and reliable way to add directional control to your Westcott Softboxes and Rapid Box Switch modifiers. This 40-degree grid helps contain light spill and narrow the beam angle from the Rapid Box 26" Octa or Rapid Box Switch Octa-S. It quickly mounts and dismounts via hook-and-loop fastener onto the softbox's recessed edge.Unlike bulky hard grids, Westcott Egg Crate Grids collapse flat to fit in the included bag for streamlined travel and storage.Care Instructions: Wipe fabric with damp cloth and immediately wipe dry