Rita and her son Joe came up with their own solution that means you don’t have to skip coffee or other teeth-staining beverages to help keep teeth looking white—just sip around it. KoffieStraws are made with 100 percent silicone that is BPA-free and can handle hot and cold sips alike. The straw's unique oval shape fits perfectly in travel mugs or to-go cups, and keeps the flow of drinks to the just-right amount. It’s a safer, eco-friendly, and longer-lasting choice than disposable plastic straws. And these bendy straws can be cut to suit your mug, glass, or cup of choice. That sounds like easy sipping to us.