These lids with straw holes are compatible with frosted Tumblers 28cl in blue and transparent. The cover provides additional protection to the drink contents, which makes it perfect for storage and will keep your ingredients fresher for longer. Our lids are dishwasher safe. The lid is made out of high quality polypropylene, which is virtually unbreakable. The lids also have a small handle on the side to hold on to and make it much easier to lift the lid.