Hey, if you've got a Richell super mug or straw mug that's starting to leak, these replacement washers are exactly what you need! This 2-pack of gaskets fits several Richell models including the Raklele Straw Mug (both 200 and 320 sizes), Kinpro 200SA/320SA Straw Mugs, and the Super Mug Aclear 200/320. Each washer measures about 2.2 inches in diameter and 0.4 inches thick - perfect for creating that watertight seal your mug needs. They're super easy to replace too - just pop out the old worn-out gasket and press this new one into place. No more drips or leaks from your favorite drinking mug! These are genuine replacement parts that work exactly like the original, so you can trust they'll fit perfectly and do the job right. Great for parents whose kids use Richell cups, or anyone who wants to extend the life of their drinking mugs rather than buying completely new ones. The package comes with two washers, so you've got a spare for next time or for another mug. Such a simple fix that saves you money and keeps your mugs working like new!