“I like the material, the design and the wearability. I chose zipster because they seem to value sustainability. But is it sustainable to send free gifts? I could not opt that out, and now I will have yet another item in my house that I did not carefully chose myself. It costs enery and material to produce these unwanted items. Please chose to refrain from those marketing techniques. At the very least, please give your clients the opportunity to opt out such unwanted gifts.”