Came across this ad just now on Fb. From the ad:
“Don’t have one? Available with purchase of specially marked 6x473ml packs of Molson Canadian for a limited time, while supplies last at select retailers. Must be legal drinking age.”

Ad image attached shows the puffer vest in question. Its blue with the Molson and Leafs logo. Doesn’t say which retailers specifically but same places you get the 6×473 presumably. I’m going to assume Ontario only.