How to get this kit ?
Don’t you find it nice ?
It was given away during Maratona dles Dolomites Enel eFondo held on December 31st 2018 at 9:00 AM (CET) in Zwift.
Sadly, unless you have access to a time machine, it looks like you won’t be able to get one. There are many one-off kits in Zwift that are not obtainable once those particular events are over.