Knowing that there are more than a few duds to choose from when it comes to one-cup and two-cup coffee makers I didn't want to wait until the last minute to start testing products for my hike. The one-cup coffee makers leave a lot to be desired in regards to overall taste and leakage but for me the small eight ounce size is the biggest con. I will be hiking mostly by myself but you never know when you are going to meet up with someone or want a double dose of caffeine. Even though it is made mostly of plastic it is sturdy; the plunger needs to get cleaned after each use or it will start to drag when you use it. The tall cylinder shape of it allows it to fit in the side pockets of backpacks or in cup-holders in vehicles but it lacks a rubber gripping area so if your hands are wet or it is raining you could easily lose your grip on it. One of the nicer points of this unit is the flip open spout closes with a strong, loud snap; that's perfect if you are going to be drinking and hiking or driving because you'll know that it's sealed perfectly. If you temper it before filling it you can get about two hours of heat; they do sell a sleeve that you can put this into that will keep the contents hotter for a longer period of time but you will need to make sure the sleeve is the correct one for the tumbler styled 1505 model. Having the ability to brew something soft and smooth or strong and eye-opening is something that coffee junkies will appreciate.