• Set of 6 silicone straw lids for Stanley Cup tumblers 1.2 L and 850 ml • Accessories designed to prevent accidental leaks with a 360-degree airtight seal • Made of food-grade silicone, durable, odorless, and reusable • Easy to clean, suitable for hand washing or dishwasher • Compatible with straws 9 to 10 mm in diameter • Protect against scratches, dents, and reduce noise, extending the lifespan of the tumbler • Mushroom-shaped design adds a fun and original touch • Compatible with stainless steel vacuum insulated tumblers and other models with a 2.75 – 2.95 inch base • Practical and portable, ideal for outdoor activities such as camping, hiking, excursions, or home use • Suitable for all ages and for daily use