Instruction: Answer the given question using the supporting document.

Input:
Question: What is the diameter at top and bottom, height of the mug? Does the top screw on or pop off ?
Document: When looking down at the lid, you want the knife at a right angle to the lid and running parallel to the top of the mug handle. Then push down with the knife handle so it presses against the top of the mug handle. The knife acts as a lever with the handle being the fulcrum. The lid will easily pop off. Your finger nails and thumbs will thank you for using a knife.
There is also a sliding piece on the top of the mug that allows you to open close the little hole that you drink from. This sliding piece snaps off the top if you need to wash it, therefore that is another place where heat leaks easily. The handle is easy to hold, and the non-slip pad on the bottom is effective to keep it from sliding around. All in all however, $10 for both mugs is pretty decent.
This is a really nice hot beverage mug. I had them before and was not able to find them. The base is nice and wide and there is a piece on non-slip rubber on the bottom. They can be put in the microwave. The top is very easy to slide open and closed. They keep coffee, etc. hot for about 2 hours. I nuke my coffee for 30 seconds after it is made and it stays very hot like I like it because I use a straw.
I had one of these when I was, well 30 years ago. They are great for travel mugs as I put them on my dash, they do not slide, they keep hot stuff hot, cold stuff cold and they hold so much!!! I put them in the dishwasher and everything is fine. Just remember to pop the top apart so it does not start to smell funky. Purchase these!! !
The wider bottom design makes these mugs unusually stable. (Note that they won't fit in most auto cup holders, but it barely matters.) The very simple rotating closure design helps keep content hot or cold longer than many thermal mugs, is surprisingly easy to open & close, and Its simple pop-out design makes cleaning easier than all others I have seen.
), and if your drink gets a little luke-warm, just pop the whole darn thing in the microwave for a minute and you're good to go! There's no metal to worry about. Another awesome thing - the mug is a BREEZE to clean. So many other insulated mugs get gunky after a while, because no matter how clean you are, you can't get into the nooks & crannies. Then I just toss them. Not with this set.
I love this mug. I was a little worried that it might leak since some reviews stated that it did. It dribbled on me the first time I used it and I thought I had wasted my money. Then I discovered that the lid will feel like it snapped on without being tight. You have to hear a loud "Pop" before you know it is truly on tight. Now I trust it and love it. So simple to microwave it and throw it in the dishwasher.
These mugs are exactly like the one my husband already has and he really likes it. He needed a mug that he knew how to get the top off and these do.
I received 2 mugs. One of them is great. The other mug, however, does not have a top that fits correctly. It is loose and leaks whenever you try to drink from it. It is not usuable for the the purpose it was purchased-as a travel mug.
(10) Double handle is secure and allows flexible grips. (11) Reasonably indestructible.Hint: This mug should not leak in normal use, but it's important to very firmly secure the top so it "clicks." But don't expect to turn the mug upside down without some minor leakage.
Answer: pop off...4 3/4  ..... 4 1/4  approx