While it doesn't do anything new in terms of flight, the Glow D-Line Flex 3 is the perfect putting plastic if you like stiff putters. Incredibly tacky and still very stiff even in triple-digit temperatures. I get a clean consistent release every time thanks to the stiff plastic and flat profile. The shape and feel of this putters reminds me of a slightly shallower Lat64 Faith which means it is comfortable in my average sized hands and releases cleanly.