In January, I placed an order for an assortment of travel mugs - when there was a fantastic sale on a huge selection of clearance items - to give as gifts to friends I don’t see until 2-3 weeks after the actual Christmas and New Year holidays. Knowing that the old-style (to me) lids with the sliding clear tabs fit other brands I had (like Rtic, Yeti, and Member’s Mark), I ordered 4 of these new-style slider lids to use replace old lids as needed on those brands, and one to replace one of the Swig old-style sliding tab lids, which - even though I soaked in hot water for a few minutes before I pushed the underside of the slider to take it apart to clean - it still broke. This new style is much easier to slide apart for cleaning without worry of breakage. And to the (at least one) reviewer who said they didn’t like this new slider lid because it leaked when closed, make sure you push to close it all the ways until it CLICKS - only then is it fully closed and won’t leak.