While the mug’s material and size are important, obviously there are other considerations. One is what special features a mug might have that makes using it more convenient. A handle is one such feature that some people find handy, although some prefer no handle at all. A no-spill lid is also good for making sure your coffee doesn’t end up somewhere other than your mouth. However, some lids make it hard to drink out of the mug, rendering it a useless addition. Easy-clean lids that come completely off make it easier to wash out the inside of your travel mug. Speaking of washing, some travel mugs are listed as dishwasher safe, which is a lot more convenient than washing them by hand after every use. Finally, some mugs come with a carry loop built into the lids. It might not sound important, but if you already have your hands full of keys, glasses, and other items when getting out of your vehicle, it sure makes it easy to just stick your pinky through the loop and keep going.