Turn any glass into a silicone straw cup with our universal fit silicone straw cup toppers. Suction keeps the topper in place for a fit that's airtight and leakproof on any size cup, and as always, 100% plastic-free. With a flexible straw that will never risk chipping your teeth, these are a must-have around the house. 100% European-grade silicone. BPA, BPS, phthalate, PVC, and lead free. Includes three toppers and bonus straw. Dishwasher safe.