What I Think of the Nextmug: The Self-Heating Coffee Mug That Finally Keeps My Brew Hot (14 oz. Review)
Spoiler: It’s a Game-Changer for Cold Coffee Haters Like Me
As someone who’s burned through six mugs in three years (thanks, hyperfocus and forgetfulness), I’ve learned one thing: most “temperature-controlled” mugs are either bulky, overpriced, or just… liars. But the Nextmug Self-Heating Mug (Spice – 14 oz.)? This little guy surprised me. Here’s my brutally honest take after using it for a month.



Why I’m Obsessed (And Why You Might Be Too)
1. It Actually Keeps Coffee Hot. Like, Really Hot.
I’m the queen of abandoning half-finished coffee to doom-scroll Twitter. With the Nextmug, I finally sipped a still-steamy americano two hours later. The secret? Its precision temperature control (104°F–140°F). No more microwave trips or sad lukewarm sips.
2. It’s Quietly Smart
- Auto-Reheat: Detects when your drink cools and reheats it without beeping (RIP my old mug that sounded like a dying robot).
- App Control? Nope, and That’s Good: No Bluetooth pairing nightmares. Just press the button to choose your temp. Simple wins.
3. Sleek, Not Clunky
The matte “Spice” color looks like a classy ceramic mug – not a sci-fi prop. It’s lightweight, fits in my car cup holder, and survived my 3-year-old’s “toddler test” (read: thrown on tile twice).
4. Battery Life: Better Than My Phone
A full charge lasts 6+ hours on the highest setting. I use it for my morning coffee and afternoon tea, then plug it in overnight. Zero stress.
The Not-So-Perfect Stuff (Because Nothing’s Flawless)
- Price: At 79,it’spricierthanbasicmugs,butcheaperthantheEmber(79,it’spricierthanbasicmugs,butcheaperthantheEmber(130). For me, the sanity saved was worth it.
- Hand Wash Only: I’m lazy, so this irked me. But the stainless steel interior cleans easily.
- No Lid Lock: The silicone lid seals tight, but I’d kill for a click-lock for travel.
Nextmug vs. Ember vs. Yeti: My Hot Take
Feature | Nextmug | Ember Mug | Yeti Rambler |
---|---|---|---|
Heating | Self-heating | Self-heating | Passive insulation |
Temp Control | 104°F–140°F (manual) | 120°F–145°F (app-based) | N/A |
Battery Life | 6+ hours | 1.5 hours | ∞ (no battery) |
Price | $79 | $130 | $40 |
My Verdict | Best value for all-day use | Overpriced for app gimmicks | Great for outdoors, not for reheating |
Who Should Buy This?
- Chronic Coffee Forgetters (you know who you are).
- Remote Workers tired of cold brew between Zoom calls.
- Gifters: This beats another “World’s Best Dad” mug.
- Outdoor Enthusiasts: Keep your tea hot during winter hikes.
“But Does It Really Work?” – Real-Life Testing
I left my Nextmug on my desk for 3 hours while I tackled laundry. Came back to coffee hotter than my patience for folding socks. For science, I also tested it with:
- Oat milk lattes: No curdling, even at 140°F.
- Tea: Held delicate green tea at 104°F perfectly.
- Soup: Yes, it works! (But hand-wash thoroughly afterward.)
FAQs from My Followers
Q: How long does it take to charge?
A: About 2 hours via USB-C (faster than my Kindle!).
Q: Is the 14 oz. size enough?
A: For me, yes – it’s standard coffee mug size. If you’re a giant latte fan, maybe go bigger.
Q: Can you use it while charging?
A: Yep! No interruptions.
Final Thoughts
The Nextmug isn’t perfect, but it’s the only self-heating mug I’d repurchase. It’s affordable (for what it does), durable, and actually solves the cold-coffee curse. If you’re like me – busy, forgetful, or just want to enjoy your drink in peace – this is your mug.