Hydro Flask - Medium Closeable Press-In Lid - Honeycomb Insulated Flask Lid - Dishwasher Safe, Black

So, a while back I bought the 650ml Hydro Flask tumbler because I prefer that shape over a bottle. Except, the included lid has two gaping holes in it, making it a thoroughly impractical water container for the vast majority of people on earth day to day. Which led me to look for this lid as an alternative. I thought it'd be ideal, given that it's advertised as "closeable". It however is NOT, because when the lid is slid closed, there is STILL a hole in the lid for lord knows what reason, I guess the slight offchance of a vacuum forming is of greater concern to Hydro Flask than not spilling your drink everywhere or being able to put it in a bag or carry it anywhere. £10 for a lid that doesn't even serve the purpose of a lid? Absolute joke, I won't be buying anything from Hydro Flask in the future.

This lid is worthless. I bought it to replace the original sip lid (not closing) I as got tired of toppling the tumbler over and having coffee spilled everywhere. This one has two holes, one can be closed with a slider, but a smaller one (i guess for vacuum break) still remains, rendering this lid absolutely not fit for purpose as advertised i.e. NOT leak proof. There must have been a warning about the second hole. As of keeping coffee warmer for longer with the closed slider, I haven’t measured the time vs temperature, but this lid is substantially thinner than the original sip lid, so I don’t think the closed slider will make much difference.

Ich habe einen Deckel für einen Becher mit 75mm Durchmesser gesucht. Auf den Bildern ist der kleine Deckel so bemaßt, dass er eigentlich passen müsste. Der Deckel, den ich erhalten habe, fiel einfach in den Becher. Maß war Außenmaß des Deckels über die Griffkante. Der Deckel in mittlerer Größe, den ich dann probiert habe, war zu groß. Vom Material her machte der Deckel einen sehr hochwertigen Eindruck, nützt mir nur nichts, wenn er nicht passt.

I actually bought this for my Ember mug as the one Ember sells is overpriced, breaks easy, and isn't as good as this one overall. For anyone else with ember mugs, this will help keep your drinks warm for longer, and battery life running longer too as heat isn't escaping as easily

As the footage demonstrates, the HYDRO FLASK Medium Closeable Press-In Lid [CPLM001] fits snugly on the beautiful STANLEY Adventure Stacking Beer Pint 16oz tumbler even without the rubber gasket. With the (inverted or non-inverted) modded rubber gasket, the lid is held very securely in place, and it actually takes a bit of force to mount the lid fully, leaving no gaps, or to unmount it. The retail package states that the lid is neither leak-proof nor spill-proof. However, the lid could be called splash-resistant. Important to note, this modded lid does not work with a boiling/steaming hot beverage in the STANLEY tumbler because the heat causes the gasket to expand and eventually the lid to get unmounted, pushed out, pushed off. Yet for all other intents and purposes, i can highly recommend the modded lid to be used with the STANLEY tumbler: it provides a more comfortable drinking experience than the double lip (plastic+steel) of the Kleen Kanteen Tumbler Lid , and with the slider closed, the beverage is given better insulation and containment. I must admit though that the slider requires good finger force to get going, is not very easy to operate, thus not suitable for small children imho. Btw a 100.00% leak-proof press-in lid would be insecure, holding a steaming hot or a carbonated beverage, because of the pressure build-up: to withstand such pressure, the lid and the vessel would have to come with threads (threaded screw-on lid!), but then you wouldn't regard or use the vessel as solo tumbler or standalone glass anymore or would you. Bottom line is, all press-in lids on the market (YETI, KLEAN KANTEEN, HYDRO FLASK, STANLEY, etc) must have a vent hole. And that's where the liquid would leak, given a rough ride in the car, see by the end of the footage.

Got this for my straw hydro flask mug, fits perfectly and doesn’t leak. For the days the coffee is hot, not cold.

the product does NOT fit the 12 OZ Slim Cooler Can, as stated on the label. the label for the hydroflask slim cooler can has an icon that states "compatible with press-in lid", but Hydroflask doesn't make a smaller lid than this one. probably a lazy oversight from the marketing department. shame.