Buy from Amazon : br br SMDV Speedbox Diffuser-50 - Professional 21 (21 x 18) Rigid Hexagonal Softbox for Canon Flash br br Patented quick-release folding system for fast and convenient setup Folds away in seconds br Light weight Durable Superior portability with the patented folding system br High quality construction for high quality soft light br Perfect for professional photographers on the go br 21 55cm Diameter