PROST 12 Inch 30cm Round Gray Card Portable Softbox Multi-function Diffuser for Speedlight Flashlight Multifunctional -- Can be a Gray Card ,Black Card,White Card.Help you to Correct the White Balance.No Need to take too much Accessories,Suitable to Outdoor Photograph. High Quality Fabric -- Inside of This Softbox Use High Quality Fabric,Which Make Output of The Light Uniform and Soft. Elasticity Belt -- Built-in Elasticity Belt Inside.Put Your Flash in it and Fixed it by the Elasticity When You Use It.Very Easy to Use. Folding Design -- It Can be Folded,Convenient Lightweight and Portable,Easy Carry. Gray Card Panel-- Gray Card Panel Use Special Technique,Durable and Not easy Lose color.