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.

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 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 have enjoyed using this product for both hot and cold items. I generally run hot water in it before putting in under my Keurig for coffee it stays hot for hours I have also used it for cold beverages. It keeps ice in it all day

I really liked this tumbler for its magnetic lid. I love that you can take it off very easily and wash unlike other tumblers. It kept my coffee hot at least for four hours and it's leak proof!! It fit just fine in my cars cup holder. I would love for a smaller model, maybe 12 ounces, but overall I really liked the product.

This 2 pk tumbler is an excellent product. It keeps my and my daughter's coffee hot while we both are in office and they fit my car cup . It is easy to clean no spills and I personally feel a very thought out product. Go ahead and get one and you won't regret.

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.

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.

These Member's Mark 20 oz. coffee tumblers are great quality! They hold a good amount of liquid, and they keep beverages hot or cold for hours. The sliding tab design is smooth and very easy to open or close as needed. Everything is dishwasher safe, which makes cleaning quick and simple. I like the weight they have, they feel sturdy but not too heavy or bulky. The solid color design is simple and clean, which I appreciate. I definitely recommend them, whether you're looking for something to hold your morning coffee or keep your water cold through the day.