Hello, at some point in the past, I remember seeing a silicone type grip cover that had a "puzzle" shaped zipper pattern running down its side allowing it to be removed easily. I past it as another gimmick product but, as I've had a lot of numbness in my hands lately, I'm reconsidering giving it a second look. I'm not interested in the redrats etc. because of the removal and sterility aspects ( I know all about the many tricks of how to get em on and off easily etc. but, am not interested as I have been there done that). Does anyone know where I might find the "puzzle" type grips I am speaking of? Many thanks for any assistance in advance.