These seem to be the modern equivalent of the now discontinued Titec Pork Rinds; Design, foam type and weight (17g) are all but identical to the Pork Rinds. It's good to be able to get an equivalent grip again. The Ritchey WCS are good, but seem to be made out of a more open cell foam that I don't find as comfortable, and the ergonomic shape isn't great either. They are also much heavier (44g). The ESI silicon grips are another popular choice.