I bought these straps to replace a faulty pair of straps that I bought off Amazon from another company awhile back. The other straps worked fine while they lasted, but I figured I wanted to try a pair made specifically to work with my ESTIM machine from here. What a difference! My new straps deliver a much more intense sensation that I ever had from my previous generic set. Not only was the session more pleasurable, but I was left with a pleasant tingling sensation afterwards that I had never experienced before. These straps are definitely a much higher quality and I would recommend anyone buying an ESTIM for the first time include these with your purchase.
Just be aware that they do require a separate set of connecting wires (which was included in my ESTIM package) and conductive gel (which i had purchased previously).