As a tip, positions that perhaps you lying flat on your back with her on the surface of you tend to be better at helping you gain more staying time. The cowgirl position is especially great during that!
The manufacturer of to some degree is DanaLife which is often a spin-off from DanaMedic, the makers of the widely used Jes Footing. This Danish company has been available of making and distributing Male Enhancement devices for more than 10 years already. So it will be obviously an established seller have confidence in.