Quick extender pro stopped all the circulation to my penis! i had to rush to the doctors to figure out what was happening..my entire penis turned purple and felt this terrible shooting pain! do not use their device. it is a scam! i was finally seeing some results until this happened! their product is a waste of money and i recommend you look elsewhere for a bigger penis! their device was not comfortable at all and left red circular marks all around the shaft of my penis! luckily the damage wasn't permanent but was a real scare! i will never use their penis extender again! and when i called them to ask them what to do. at first they put me on hold for almost 20 min before finally responding saying i should go see a doctor! ridiculous company