The Ultra bottle is the result of a 5-yr quest by Johnnie Walker’s owner, Diageo, to discover the most sustainable and lightest packaging attainable while retaining the luxury aura with the franchise and its Unique blend of whiskies, which involve ultra-unusual Oban, Brora, Royal Lochnagar, and several ghost distilleries. https://whiskeylandllc.com/product/johnnie-walker-blue-label-ultra/