Review on 🏕️ 18oz Stainless Steel Camping Mug with Leak-Proof Screw-On Lid - Insulated Coffee Mug and Beer Mug with Handle - 540ml Thermal Mug by Becky Haferkamp

Ordered this thermos which I have used daily since 2003. I liked the wide base, screw top and double steel walls. I received it and loved its simple, sturdy design and that the wide base made it almost tipping-proof on my desk (the one time I accidentally knocked it over didn't work. I noticed right away that it does NOT hold anywhere near 18 ounces actually filled a 12 ounce can of soda (no ice) it to the bottom of the lid leaving a little room ok I can live with that as more trips to refill was a pretty good deal .for the wide base, steel stock and the Screw top lid The lid quickly became both a blessing and a bane, while simultaneously sealing the mug so it wouldn't spill if you knock it over, and holding the contents hot to keep it warm for hours (I don't know exactly how long, since I (always finished my coffee before it had time to cool) the cap was very painful when drinking coffee (or soda) because you have to unscrew and remove the cap every time you want take a sip, which is troublesome when you drive. dripping onto clothes when you take them off to take a sip. There were also a couple of times I spilled some coffee from the mug when trying to close the lid while stopped at a red light, so not a good driving mug. Because I liked the feel of the cup in my hand and its strength, I MacGyvered it. First I drilled two quarter inch holes side by side on one side of the lid and then an 8 inch hole across the lid on the other side to break the vacuum and allow the coffee to flow out smoothly with no cuts or gurgling due from dehydration. Ventilation. Once I did that, I could use it as a travel mug in the car and drink coffee without having to take the lid off every time. And thanks to the lid's design with a slit down the middle of the lid with bottom "troughs" on either side, I've been able to poke holes in the rim of the lid, which allows me to sip coffee without spilling anything. A small amount of this compound compromised the cup's "spill resistance", didn't really affect the time the coffee stays hot to warm up before I've finished the cup, and the wide base still makes it difficult to tip the mug mug over. So if I were to make changes (Werk, not MacGyver) I would go from 20 to 24 ounces for a real cup and then add a built in drinking port that can be accessed without removing the cup. Lid as well as a small opening that allows the drink to flow smoothly. Just some food for thought on how to make a good cup great.