Meking 18 inch Speedlight Ring Flashlight Softbox for Canon Yongnuo with Carrying Bag - Easy fold design, ring-shaped when unfolded, the maximum diameter is 46cm (18" ), thickness is 13cm, inner diameter is 13cm, - Softbox front designed with diffuser, the internal with reflective materials - the top reserved an opening for flash unit with width adjustable - skeleton made of magnetic iron pipe, easy to fold and easy to carry.