I picked up the Ceramic Coated Straw Set to use with my Corkcicle 16oz Tumbler and they fit perfectly. The ceramic coating really does feel smoother than a plain metal straw, which makes sipping more comfortable, especially with cold drinks. They also work in other cups I own, so they are pretty versatile. Only reason for four stars is that I wish the set came with a small cleaning brush, but overall a solid upgrade for everyday use.