Safe Material:The lids are made of high quality food-grade plastic,BPA Free and durable. These 40 oz tumbler lids are not only safe and healthy but also durable and environmentally friendly to be in direct contact with drinks,easily to clean. Professional Design:The cover on the top of lid is dual opening design and can be rotated,support two drinking options. The straw opening port support to drink by inserting straw into the straw opening.The opening come with silicone design to prevent water spillage. Perfect Fit and Compatibility:H2.0 Silicone Spill Proof Stopper Set of 3,The 6 Pcs Extra Long Reusable Straws, and 2 Pcs Tumbler Lid Replacement are designed specifically for Stanley lid replacement 40 oz tumblers,The 40oz tumbler lid is perfectly fit for Stanley Adventure cup 40oz and other 40oz vacuum insulated stainless steel tumbler lid.. Please check your tumbler dimensions before purchasing. Easy To Use：This replacement lid is designed with a slide button,360° rotating design,rotating cup cover is easy to use, easy to carry. The travel tumbler lids fits closely to the cup and has a good airtightness to prevent spills. Our Services:We will provide 2 spill proof and splash resistant tumbler lids 40 oz.We are so confident in our tumbler lid that we will replace them for free if they would ever break! 40oz Stanley Cup Accessories Set,Including 2pcs Replacement Lid Fit Stanley 40 Oz Tumbler,Tumbler Lids For Stanley Cup 2.0,H2.0 Silicone Spill Proof Stopper 3 Set and 6 Pcs Long Reusable Straws