Winter Soldier Crate is a limited crate from Mail.ru. You can purchase it for 21.95 dollars.
Where to buy?
- https://pubg.my.com/en/wintersoldier (Global version)
- https://pubg.mail.ru/promo/wintersoldier (for Russia and CIS countries)
Would it be marketable?
Mail.ru made an announcement that crate will become marketable in the future. Probably sometime after the promotion ends like it was with VK Set.