Is the G Pen Roam E-Rig Worth It? A Complete Review

Yes, the G Pen Roam is worth it for concentrate users who prioritize portable, water-filtered hits and all-in-one convenience. It perfectly solves the problem of wanting smooth, water-cooled dabs without being stuck at home or carrying a complex kit.  

Let's be real—hitting a dab rig on the go usually means sacrificing... well, everything. You either get a harsh, dry rip from a basic wax pen, or you're hauling around a fragile glass rig and a blowtorch like a science experiment.

The G Pen Roam (especially this sick Dr. Greenthumb's limited edition) promises the best of both worlds: a full-on portable e-rigs with spill-proof water filtration that fits in your hand. But does it actually deliver? We got our hands on one to find out.

Before we get into it, just know this is for flower concentrates (wax, shatter, etc.) ONLY, not for dry herb.

What Exactly is the G Pen Roam?

So, what’s the deal with this thing? Think of it as your portable, all-in-one dab setup. No torch, no separate pieces, just everything you need in one tough little device. It's an electronic rig that heats your wax to the perfect temp every time.

The most important features are the "internal hydro-tube" (the bubbler), the "full quartz tank" for flavor, and variable temperature control. This limited edition collab with L.A. legend Dr. Greenthumb's just makes it look even cooler, with a matching green hemp case.

If you already know you want one, you can grab the G Pen Roam Dr. Greenthumb's Edition here. It's a limited release, so don't wait.  

G Pen Roam Key Features: The Good, The Bad, & The Dank

The Spill-Proof Water Bubbler (Its Best Feature)

This is the Roam's superpower. It's a water pipe... inside the vape. You get those smooth, cool rips you'd expect from a home rig, but without worrying about bong water spilling in your backpack. It’s genius. The device has an internal, self-contained borosilicate glass hydro-tube with a UFO perc, and it’s completely spill-proof.  

Pro-Tip: Since this thing is built for travel, pair it with a bag that keeps your whole stash protected, like The Drifter - Smell Proof Rolltop Backpack.

Flavor & Clouds: The Full Quartz Tank

For flavor, quartz is king. Unlike metal coils that can taste 'hot' or ceramic that takes forever to heat up, the Roam's full quartz tank gives you the pure, clean taste of your terps.

Translation: your expensive wax will actually taste like it’s supposed to, not like a burnt circuit board. Set it to a low temp (around 650°F) to vibe, or crank it up to 800°F for massive clouds.

Battery Life & Pass-Through Charging

The 1300mAh battery is solid for a full day's sesh. But the real clutch feature? Pass-through charging. It means if the battery dies, you can plug it in (it uses a Micro-USB) and keep hitting it while it charges. Your session doesn't have to end just because you forgot to plug it in.  

The Look & Feel (That Dr. Greenthumb's Collab)

This thing isn't some cheap plastic toy. It's wrapped in a tough aluminum alloy shell, so it feels sturdy and protects the glass inside. And this Dr. Greenthumb's edition... I mean, look at it. That green is awesome, and the matching hemp travel case (included!) just ties it all together. This is a limited-edition collab, so it definitely adds that 'novelty' vibe.  

How to Use the G Pen Roam (A Quick Start Guide)

How to Activate & Use Your G Pen Roam

1. Charge It Up: Make sure it's charged (or plug it in—pass-through for the win!).
2. Add Water: Gently remove the silicone mouthpiece and fill the glass hydro-tube (bubbler) with a small amount of water. Don't overfill!
3. Load It: Use the included loading tool to scoop a small, rice-sized amount of your concentrate directly into the center of the quartz tank.
4. Turn It On (Activate): Press the power button 5 times quickly. The LED will flash.
5. Pick Your Temp: Use the + and – buttons to select your temperature (600°F - 800°F). We recommend starting low (around 650°F) for the best flavor.
6. Heat It Up: Press and hold the power button to heat. The device will give haptic feedback (a vibration) when it’s at temp.
7. Take Your Hit: Inhale from the mouthpiece. Enjoy the smooth, water-cooled clouds.

How to Clean the G Pen Roam (The Easy Way)

Keeping your rig clean is key for flavor. A dirty rig tastes nasty. Luckily, the Roam is designed to be easily disassembled.  

1. Disassemble the Parts: Gently remove the silicone mouthpiece, the glass bubbler tube, the quartz tank, and the tank cover.
2. Soak the Gunk: Soak the glass bubbler and quartz tank in a cleaning solution (isopropyl alcohol works) for 30-60 minutes.
3. Wipe the Rest: Use cotton swabs (like the included 'Cleaning Tips') dipped in alcohol to clean the connections and wipe down the inside of the device.
4. Use 'Max Cleaning Mode': The Roam has a built-in 'Max Cleaning Mode.' This heats the element to burn off any stubborn residue.
5. Rinse & DRY: Rinse all soaked parts thoroughly with warm water. This is crucial: Let everything air dry COMPLETELY before reassembling. Hitting a wet or alcohol-filled vape is a bad time.

Need to stock up on supplies? Check out our full range of cleaning solutions and cotton swabs.

Who is the G Pen Roam Actually For?

Alright, so let's break down who this is actually for.

For the "Daily Driver": Yes. If you're an experienced user who wants water-filtered rips on the go, this is your new best friend. It's the perfect companion for a hike, a festival, or just a chill sesh at a friend's place. It's the upgrade from a basic wax pen you've been looking for.  

For the "Novice Navigator": Absolutely. If you're new to dabs, the Roam is one of the easiest and safest ways to start. There's no torch, no complicated parts, and the haptic feedback tells you exactly when it's ready. It's a perfect all-in-one starter kit. 

Who is it NOT for? If you only smoke dry herb, this is not for you. This is a concentrate-only device.

The Final Verdict: Is the G Pen Roam Worth It?

After a full review, our answer is favorable.

The Good (Pros):

• Incredible Portability

• Spill-Proof Water Filtration (a true game-changer)  

• Excellent Flavor (thanks to the Full Quartz Tank)  

• Super Easy to Use (Great for beginners) 

• Haptic Feedback (No guessing when it's ready)

• Pass-Through Charging (Clutch!)  

• Durable Aluminum Build  

• Awesome Limited Edition Collab  

The Not-So-Good (Cons):

• Micro-USB Charging (We'd prefer USB-C in 2025)

• Battery life is good, but heavy users might need a midday charge (good thing it has pass-through!)

• Limited Edition (The Dr. Greenthumb's version might sell out, which creates urgency but is a con if you miss it)  

The G Pen Roam solves the single biggest problem of dabbing: portability vs. quality. It delivers smooth, tasty, water-cooled hits in a package you can actually throw in a bag.

Get your G Pen Roam today.

G Pen Roam FAQs (People Also Ask)

 Still have questions? We've got answers to the most common ones.

Question: What's in the Box with the G Pen Roam Dr. Greenthumb's Kit?
Answer: The complete kit includes: 1 G Pen Roam E-Rig Vaporizer (Dr. Greenthumb Edition), 1 Quartz Tank, 1 Tank Cover, 1 Silicone Mouthpiece, 1 Glass Bubbler Tube, 1 Micro-USB Charger Cable, 1 Travel Case, 1 Loading Tool, and 1 pack of Cleaning Tips.

Question: How long does the G Pen Roam battery last?
Answer: The G Pen Roam has a 1300mAh battery, which provides enough power for multiple sessions or a full day of moderate use.  

Question: Can you use the G Pen Roam while it's charging?
Answer: Yes. The G Pen Roam features pass-through charging technology, which allows you to use the device while it is plugged in and charging.  

Question: Is the G Pen Roam for dry herb or concentrates?
Answer: The G Pen Roam is designed for concentrates and wax only. It is not a dry herb vaporizer.