The customer service is EXCELLENT! I love this travel mug for coffee. It's a perfect size to fit compact/travel coffee makers (I use Horavie) and fit in my purse or my everywhere-bag without the fear of leaking (be sure to tighten lid COMPLETELY.) I've used it many time for a functional mocktail/cocktail shaker. The drinking opening in the lid holds the ice back when pouring and the tightened lid prevents leaks when shaking. The stainless steel promotes the chilling and I can use it as a non-breakable tumbler for poolside.

I’ve been using this 12 oz stainless steel tumbler for a couple of weeks now, and I’m genuinely impressed. It keeps my coffee hot for several hours and my iced drinks cold even longer — perfect for commuting or long workdays.The design is sleek and minimalist, and the black finish looks very stylish. The size is ideal for fitting in my car cup holder or tossing in a bag. The lid seals tightly and is truly spill-proof, which I appreciate because I’ve had no leaks, even when the tumbler tipped over in my backpack.It’s also super easy to clean, and the stainless steel interior doesn’t retain odors or flavors. I’ve used it for coffee, tea, and even a cold beer — all worked great.Highly recommend this mug for anyone who wants a reliable, portable thermos cup that looks good and actually works.Tip: Preheat or pre-chill it with hot/cold water for a minute before use to get even better insulation performance.

Perfect mug for cold drinksFits well in your hand and any cup holderHas a tight screw in lid with a vent that can be completely closed for no spills or partially open for venting or fully open for drinkingVery good product

Well made and very pleased that it is secure when lid is on and doesn’t leak. Keeps my coffee pretty hot for a good while. It also keeps my cold drinks very cold for a few hours. I love the green color and how attractive it is overall.

Great for on the go.Sometimes leaks from the breather hole.Great quality; love the different colors. Hold a normal size cup of coffee. Love the closable lid, easy to drink out of. Almost spill proof.