The Delrin Skyva is the answer to the number one most requested version in 2017. The denser material means that it has way more rimweight and spintime. The design is much more competition focused. The aluminum extends passed the bearing seat on to the the pad seat creating a beautiful machined middle, differentiating it from many other Delrin throws out there. That little touch was done to prevent cracking and slipping issues near the pad and improve yoyo smoothness - and looks more premium than ever!