The delivery consists of a rubber, Velcro and the folded softbox .... and now what? Since no instructions was placed, I had everything to me a little piece together. My solution: The rubber (straight or diagonally mounted - depending on the orientation of the flash light) onto the flash, then over and fix the unfolded softbox this with the Velcro strap. After the soft box sitting firmly and securely on my Metz flash. The flash with softbox very nice and soft and still retains a good grasp or guide number in spite of everything. Practically, the small size of the disassembled softbox - as it has in every camera bag space.
