MATERIAL:The Lid and Slider are made of AS crystal clear plastic which are BPA free.Reusable,sturdy and durable Non-toxic. SIZE:20 oz – 2.82*2.62*0.6 inch, Only fit for the mouth diameter of 2.8in stainless steel tumbler.Please confirm the mouth diameter of your water tumbler before placing an order. Splash Proof Lid:The leak-proof lid is designed with double-sealing technology, so you don’t have to worry about spills, especially when filling hot drinks or driving.Good air tightness design keeps your beverage warm and cold longer. DESIGN: The slider can open and close,straw hole allows direct sipping or use with a straw. NOTE: This replacement lid is designed to fit 20oz Skinny Stainless Steel Tumblers Only. If you need it for other brands, please check precisely on size, which is shown in the product picture. XccMe 4PACK 20 oz Skinny Stainless SteelTumbler Replacement Lid Spill Proof Splash Resistant Lids,Straw Friendly, BPAFree.  Specification:  ☆Material:AS crystal clear plastic,BPA free  ☆Size: 2.82*2.62*0.6inch  ☆Quantity: 2pack  ☆Design:The leak-proof lid is designed with a unique double-sealingtechnology, so you don’t have to worry about spills, especially when fillinghot drinks or driving. Sliding cover design can fix it in any positioncompletely that hole cover allows direct sipping or use with a straw.  ☆Cleaning Method:Wash with non-scratch sponges or cloth, dishwashersafe.  ☆Note：The lid is designed for 20oz Skinny Stainless Steel Tumbler,Only fit for the mouth diameter of 2.8in stainless steel tumbler.Please confirm the mouth diameter of your water tumbler before placing an order.