Product Rating: 4 Stars - Extremely effective! | Power Rating: Strong - Got me there without a problem. | Product’s texture and material construction: The outer layer of silicone has a soft texture, contrasting with the firmer core. The ridges along the shaft are raised just enough so that you can feel them, and the base is perfect for o-ring harness use. The colours are just gorgeous as well -- I think I like to look at this one almost as much as I like to use it! | Review Details: The head is nice and girthful on this dildo, so it's probably not going to be ideal for beginners, but if you want to try it anyway, it's certainly worth the patience (and extra lube)! My wife and I use this one with the SpareParts harnesses, and we've yet to have a problem achieving orgasms with it. The O2 Revolution's shape and texture are realistic enough to feel wonderful, and it's aesthetic enough to bring a touch of whimsy to the bedroom as well.