Sipworks Coffee Tumbler 20oz | Gray Marble

Awesome cup!

I like the cup but the blue other cup I had I think was better. The other one hold the heat or cold better. I still like it. Wouldn't be without it.

Leakproof, so easy to clean, keep coffee hot!! Love it!!

When I first started looking for a nice coffee mug that would stay warm, I wanted something that was different from a thermostat.

SipWorks have great color-ways for their Tumblers. I purchased two Tumblers from June-August of 2020 in White and Wood print. I've been cleaning these Tumblers in the dishwasher, and the Tumblers (the metal portion) are holding up very well. None of the print or color have chipped off.

Unfortunately, I can not say the same for the plastic lids. Do not wash the plastic lids in the dishwasher, they absolutely will crack. Wash or rinse the plastic lids by hand. The overall quality of the lids are lackluster, and not leak proof. Durability is just not there. After repeated use with steaming hot liquids, the cracks in the lid continue to spread until the entire lid cracks.

Luckily, Amazon sells extra lids with various types of closures: Open and Capped.
If you search for: "20 oz Insulated Tumbler Lid Splash Proof Lid Press-In Replacement Lid for YETI Rambler, Ozark Trail"
I ended up purchasing option: F (in 20ounce)
It works great.

Hot liquids stay hot for about 2 hours and slowly cools down to room temperature at around 8 hours. It’s honestly perfect for a full work day at the office. Excellent.

It's a 4/5 Stars for me.
Minus -1 star for the poor quality plastic lids.

Overall, I'm still very happy with both of my Tumblers and would definitely repurchase, just make sure to buy an extra lid.

Very easy to clean and so far no spills. Fits perfectly under keurig and keeps its nice and hot.