Vacuum seal does not leak! These are my goto coffee and water tumblers. I have Parkinson's and it makes me Sir Drops a Lot. I love that the seals stay sealed. Both cups are full of water. One cup upright and the other upside down. No leaks onto the counter.

The members mark coffee tumblers are very nice. I fill it up every morning on my way to work, and when I finish it a couple hours later, it is still nice and warm. I have not had it leak yet, and it didn't spill when I knocked it over. They are very easy to clean. My wife wants to get more colors now because she loves using them too.

I absolutely love these travel cups! The black and white colors were ideal for my preferences. The vacuum seal keeps my drinks hot all day and the screw top makes the cups completely spill proof when the lid is closed. They hold 20oz of liquid and are dishwasher safe. The size is perfect to fit right in my hand and they fit in every cup holder I've tried.

The members mark 2 pack coffee tumblers in tan and brown have quickly become my favorite travel mugs. The colors are attractive, neutral and stylish and I especially like that you can mix & match the lids to the cups. The lid design is my favorite part. It pours the coffee smoothly and doesn't spill a drop when it's fully closed. The material is comfortable to grip and doesn't slip when I pick the tumbler up. My coffee stays hot and my iced tea stays cold! Great product.

I highly recommend having these coffee tumblers, not knot because of their vibrant colors, but because they are big ( holds about a cup and a half! ) , keep coffee hot, have a secure plastic lid that prevents splashes (NO spilling!) and cup- holder friendly. They have like a plastic layer that makes it soft and cool to the touch. It also has a rubber grip to prevent slips. But best of all, it is dishwasher safe!!!

These tumblers do not leak even when turned completely on their side, even when turned completely upside down! The outside of the tumblers do not get hot or warm at all and stay comfortable to hold while the inside stays hot. The lid screws on and has a magnetic sliding tab that closes to keep the area that you drink from closed when not using. This magnetic sliding tab creates a vacuum like seal and really keeps your drink hot, you can hear it when you open the slide letting the air in. The colors are super cute and stand out from others. The shape allows you to grip the tumbler securely. The lid comes apart so you can thoroughly clean it so no hidden or hard to reach mold. To top it off this tumbler keeps my drinks hot all day.

5 out of 5 stars for these coffee mugs! They keep your coffee hot for a long time and keep your cold drinks cold for a while, excellent performance in my opinion! Hold 20 ounces of hot or cold beverages, and are perfect size and weight for a good quality coffee mug. The sliding top is really nice and you can take it apart to clean, then assemble it back together no problem at all! Great product, amd it has a non slip rubber bottom!!

These adorable 20 ounce travel coffee tumblers are good quality. I love that they come in a variety of colors. They are well made, stainless steel, top rack dishwasher safe, and have a max fill line printed inside so you don't over fill your cup. I also like that the closer tab on the top is magnetic and easily comes off, as does the the tab on the inside cover, for a more thorough cleaning. I think they would be perfect for hot or cold coffee.

This 2 pack coffee tumblers have great insulation! I used it for hot tea and the water stayed hot for over 12 hours. These tumblers washed up nicely and fit into the cup holder in my car. Which is a bonus! The tumblers came in a pack of 2 and were shipped in a box together. I received the blue and green tumblers and they were nice colors. There wasn't any assembly necessary and overall are a great addition to our cabinet.

This sleek, two-pack Member's Mark insulated mug set features an attractive, inverted purple and pink color scheme. Highlights include secure, screw style leak-proof lids and non-slip rubber bases that prevent sliding and protect surfaces. The mugs are lightweight even when filled. While the intricate lid mechanics require careful cleaning, the stylish, ergonomic design and durability is perfect for daily commutes. Instructions are included related to care and cleaning.