I was so excited to try this easy sip n close lid, but it started leaking, soon after purchase. Liquids get trapped in between the seal when tipping to sip, and coffee dribbles out the seam, right down the front of my shirt when driving, every time I take a sip, once the leaking starts. I contacted company, and they promptly sent me another lid, but it too, has the same problem after a couple weeks.
I do clean it regularly, bit so bout have a dishwasher(me;). It's like the silicone holds onto any miniscule hard water deposit, any coffee, etc and it can no longer make a water tight seal. Really doesn't work. Please come up with a leak proof flip top lid, without all the seal, gasket issues. Great service, Bad product.

I really want to love these. We bought one, and then a second. REI replaced the first because it became lose and developed a leak 80% of the time as it would just not seal correctly. Now the second one as well as the replacement for the first are developing the same issue.
They are PITA to clean. Disassembly isn't difficult but it's tedious and the silicone gasket which is integral to the design will wear. So will the harder rubber stopper on the inner portion. We use ours and clean them almost daily but this is simply a wear item and isn't worth replacing IMO. I'll just go with the regular type. Hydro needs to develop a cap with the flip-up stopper that includes a 2ndary lock, a design I've seen on other mugs. Hard to beat those and frankly I'm switching back to my other travel mug that uses it. Not as complicated to use or clean and it's never leaked on me.
And when I say leak, coffee breaches the inner seal and dribbles out through the gap between the top portion (which twists to open or seal) and the bottom portion which screws onto the flask... The location that it dribbles from places hot coffee right onto your chin while you drink, down the flask and onto your shirt.
Cool design, but it needs some tinkering.

They did a great job with this lid as most with this design are a leaky mess but there's doesn't appear to leak at first. However, when using with hot beverages, as this lid is intended for being a tumbler lid, it leaks if put upside down or shaken, not much but also not none. You guys should take inspiration from other brands and make an official actually leak proof lid, like what Contigo has or Iron Flask. There's a ton of third party leak proof chug cap lids for hydro flask on Amazon that are clones of iron flask designs. I prefer Contigo lids because they tend to hold up better, I particularly like their auto seal lids and how they fold out for washing. However the build quality of your bottles and the materials you use (that is hydro flask) is nicer so I want to remain your customer.

It's perfect for what I needed. A small coffee tumbler with a simple opening mechanism and that it leak proof. It's not different than others, but I find it pretty also.
The price is okay. It holds the temperature pretty well as described. The color finish is pretty resistant to scratches. It also easy to disassemble the lid to clean it.
I like the handle. It's comfortable to hold and you can also clip it to your bag with a carabiner. If you need a silicone base protector, it's the Small size that you will need. I like the fact that you can buy the lid separately if you need to (in case it breaks or the smell can't be removed).
I have been driving alot recently, so this is perfect for the cup holder. Just be aware that it holds around 350 ml. I personally think that this is a great bottle ( speaking for myself who bought too many bottle). The quality built is great.
Nothing bad to say about it so far. The opening is big, so you can easily put ice and it also makes it easy to clean it deeper with a sponge.