The MVP Proton Catalyst is a stable to slightly understable distance driver designed for max distance. MVP's Proton plastic is not overly grippy and it's slightly flexible. It is also very durable and tends to be a little more glidey than in other plastics. As a 13-speed distance driver; I wouldn't recommend the Proton Catalyst for new/novice players. But intermediate players like me who don't have a ton of arm speed will be able to crush this disc down the fairway. Some of my farthest thrown drivers were with a Catalyst, as they beat in I can hyzer flip them for smooth s-shaped lines. Advanced players will be able to immediately hyzer flip the Catalyst straight out of the box, and it also makes an incredible disc for rollers. I don't personally throw stable/understable discs sidearm, but this disc is extremely comfortable to grip forehand. We also have the Plasma Catalyst and Neuron Catalyst. MVP Proton Catalyst Flight Numbers Speed: 13 Glide: 5.5 Turn: -2 Fade: 2 Commonly used for: Distance drives Stability: Stable Experience: Intermediate + Dimensions & Specs Height: 1.9 cm Rim Depth: 1.2 cm Rim Thickness: 2.4 cm Diameter: 21.1 cm Flexibility: 11.11 kg Max Weight: 175.1 gr