That is the new jersey which is paired with black pants as you can see here:
The weird arm design is not a mandated all jerseys must be the same idea as we first thought in the PPP snark lab. This is the USA jersey for comparison with an explanation of its similar arm look:
Perhaps the similar Canadian sleeves are inspired by something Canadian like the ice scrappers you use to clean your windshield, it’s not clear yet.
If you love this look, Team Canada is happy to sell it to you for $159.