High Quality Material : The cup lids are made of food grade crystal clear AS plastic which is BPA free, Eco-friendly.The lids can be directly in contact with the beverage,safe to use and easy to clean. Perfect FIT : These insulated tumbler lids replacement fit well for 3.25 inch diameter cups and 12 oz coffee mugs.The lids can replace for 20 oz yeti rambler, Beast, SUNWILL, Juro, Umite Chef tumbler,but not for 20 oz skinny tumbler. Perfect Design : There is a wide mouthed straw drink hole on the top of tumbler lid for easy sipping.It's silicone seal ring design keeps beverage warm or cold longer. The tumbler lids replacement can effectively keep splashing and overflow while the glass is turned over. Note : Please measure the mug mouth inner diameter size before purchasing.The 20 oz tumbler lids are suitable for stainless steel insulated mugs with a inner diameter of 3.25 inches. 100% After-service Guarantee： If you are not satisfiled with the products after receiving package,please contact us in time,we will surely provide you good after-serivce. 20 oz Tumbler Lids Replacement Spill-proof Splash Resistant Lid Cup Tumbler Lids Covers for YETI Rambler,Old Style Rtic and More Travel Mugs 4 Pack