I make these out of recycled soda cans.They are lightweight and can be use with all types of hair thin or thick.They are very comfortable to wear,I even wear them when I sleep.I put foam as the backing to keep u from getting cut(even though I have never got any, it is always better to be safe then sorry).I can make them out of any can u like, if I have the can, but if not, I will try to do my best to find that can u want me to use,just drop me a note on the can u want.