Have found me two of those things. They are a bit too "plastic and Elaste". Sloppy processed. Demolished is nothing in my two copies. But can still come, I think. Keep doing on my flash but good. You just have to understand how to do it: the enclosed rubber ring over the flash head ("non-slip pad"), then the softbox with their tabs on it and then the Velcro strap around it. Property me now concerned two other mini-softbox. These are elaborately sewn from fabric, have a stable and good attachment (non-slip coated tape with overleaf Velcro pad) and are equipped with 15x20 cm and even bigger, and above all: They cost almost the same !!! Therefore, only 2 stars from me.