Each weapon case contains a single Wintersday weapon skin of your choice to unlock for your account.
{"name": "Wintersday Weapon Choice", "description": "Each weapon case contains a single Wintersday weapon skin of your choice to unlock for your account.", "type": "Container", "level": 0, "rarity": "Rare", "vendor_value": 0, "game_types": ["PvpLobby", "Activity", "Wvw", "Dungeon", "Pve"], "flags": ["AccountBound", "NoMysticForge", "NoSalvage", "NoSell", "DeleteWarning", "AccountBindOnUse"], "restrictions": [], "id": 99222, "chat_link": "[&AgGWgwEA]", "details": {"type": "Default"}}