From Manufacturer
If you've ever found yourself trying to decide between the sizes of softboxes you've collected, the Large Ezybox Pro Switch Softbox from Manfrotto just might be your solution. Using two simple zippers, the 17.3 x 35" or 35 x 35" modifier lets you switch between a long rectangle light shaper for edge lighting or fill light, and a square format for portraiture or fashion. Besides this unique feature, the softbox quickly breaks down to a fraction of its open size for storage or transport in the included bag. The Pro Switch is compatible with both studio and shoe-mount flashes with the purchase of the appropriate mounting hardware.
The interior of the Pro Switch is reflective, high-output silver and it has removable inner and front diffusers that may be used separately, together, or removed for contrast options.