The Ice Pouch: A two-stage 330ml aluminium activation pouch, with a resealable built-in spout for easy drinking. The pack design is printed with thermochromism inks, which change colour when the milk is at optimum coldness. Personal trainer Freddie Osei is a fan of the temperature gauge idea and says although the bottle is slightly “Capri Sun-ish” it could work well for milk “if marketed properly”.