Perfect Size: Our Seal Lid Gasket Replacements Are Only Compatible With 16 20 Oz Contigo Snapseal Byron Insulated Travel Mugs. Please Ensure Before Ordering. | | Replacing Regularly: It Is Recommended That The Rubber Lid Gaskets Of The Travel Mugs Should Be Replaced Every Three Months To Make Sure Your Mug Is Effectively Leak-Proof. Our Seals Lid Gaskets Can Also Prevent Your Mugs From Stains Caused By Water Leaking. | | Product Material: Our Seal Lid Gasket Replacements Are Made Of Silicone, Suitable For Daily Use. Also Easy To Clean By Both Hands And Washing Machines. | | Package Content: You Will Receive 4 Pieces Of Rubber Lid Gaskets, Which Are Compatible With 16 Oz 20 Oz Contigo Snapseal Byron Coffee Mugs And Travel Tumblers. Enough To Satisfy Your Daily Use And Sharing With Your Family Or Friends. | | Warm Tips: The Reference To "Contigo" "Snapseal" Is Only Used For Showing Product'S Compatibility, But Is Not Sponsored Or Endorsed By, Or Affiliated With Th.