Short’s Brewing Company custom stamped Neutron Envy, Fission Reactor and Proton Photon discs from MVP Disc Sports! Weights and colors will vary. Envy weights vary between 170 – 175 Reactor weights vary between 165 – 169, 170 – 175 & 176 – 179 Photon weights vary between 170 – 175 Please leave a note in your order if requesting a color or weight and we’ll try our best to meet your needs. Feel free to send us an email at [email protected] if you have any questions. Happy throwing!