Stojo cup

  The cups are made of food-grade, recyclable materials, are BPA-free, microwave safe, and can carry hot or cold liquids. When not in use, they collapse into a neat little box in your pocket. Even better, if you carry your own tumbler or cup, Starbucks will give you 50 cents off your favorite beverage. Save the environment while saving money !  LFGB-certified silicone is used to make the cups, mouth tabs, and straws. This means it complies with a European safety requirement that is considered more stringent than the FDA standard for food-grade silicone (though there are no known problems with the FDA protocols).  The lid and heat sleeves are made of BPA-free polypropylene, which is recyclable if you decide to toss your Stojo cup in Singapore, but it is supposed to last "many years" with regular use . Plenty of travel mugs claim to be leakproof, but what sets the Stojo apart is that it is also collapsible, making it the perfect to-go cup.  You open the mouth tab to let the air