Male penis enhancement suggestions for my boyfriend.

I am looking for suggestions on a non toxic, no side effects and safe male penis enhancement. I have done online searches and the ones that I have found do not have sufficient information on usage and how long they last. Please let me know what you have used and how successful you have been with it basically I want to know what to get and don't want to waste my money and time. Please NO pills AND NO SPAM looking for testemonials or information on CREAMS or SPRAYS. Tweet