bird locked

this is my Bird Locked I have try to wear it a couple of time and does not work for me. I am a larger male and after wearing it over night end up with some marks. because it is one size fits most. I can not make the ring larger and is too tight. and it would need to be longer for me to wear for longer periods. I do like the idea of the silicone and it being flexable. I am not sure i could pull out or not but don't think i would be able to get back in with out being unlocked. I ado think this would work for smaller guys.