The North Face ThermoBall Traction Mules V Review: The Camp Slippers I Actually Use
The simplest way to describe the The North Face ThermoBall Traction Mules V is this:
They’re slippers you can actually use outside.
That’s exactly why I like them.
Most slippers fall into one of two categories. They’re either too flimsy for outdoor use or too bulky to bring along when traveling.
I wanted something different—something warm enough for cold mornings, comfortable around camp, and practical enough for everyday use.
After seeing them at the REI in Longmont, Colorado, I finally bought a pair.
After using them around camp, during cold van mornings, and throughout winter at home, I can confidently say:
If you want warmth, comfort, and real traction in one simple slip-on, these are worth considering.
What Are the ThermoBall Traction Mules V?
The ThermoBall Traction Mules V are insulated slip-on camp shoes designed for warmth and comfort.
They feature:
- ThermoBall™ Eco insulation
- Soft fleece lining
- Recycled ripstop upper
- Rubber traction outsole
- Collapsible heel for easy on and off
They’re designed as a camp shoe, but I use them for much more.
I wear them for:
- Walking the dog
- Stepping outside the van
- Quick campsite chores
- Cold mornings around camp
- Relaxing at home
That’s what separates them from regular slippers.
They’re comfortable, but they’re also functional.
Warmth and Comfort
The biggest reason I bought these was warmth.
And they deliver.
The ThermoBall insulation traps heat without making the shoe feel heavy or bulky. Once you put them on, they warm up quickly, and the fleece lining adds the cozy feeling you want from a slipper.
They are especially good for:
- Cold van mornings
- Post-hike evenings
- Fall camping
- Cabin weekends
- Chilly floors at home
They are not winter boots, and I wouldn’t use them in deep snow.
But for staying comfortable around camp, they work extremely well.
What Is ThermoBall Insulation?
Before buying these, I wasn’t familiar with ThermoBall.
The North Face’s ThermoBall™ Eco insulation is designed to provide warmth similar to down while maintaining performance in damp conditions.
Instead of a traditional flat insulation layer, it uses small synthetic clusters that trap heat in tiny air pockets.
The result is insulation that feels warm without adding unnecessary bulk.
For camping and travel, that combination makes a lot of sense.
Are the ThermoBall Traction Mules Worth It?
This is where these shoes make the most sense.
If you only want a basic indoor slipper, there are cheaper options.
If you need a winter boot, these aren’t designed for that.
But if you want something you can wear around camp without constantly changing shoes, they stand out.
The rubber outsole means you can:
- Walk across gravel
- Step outside the van
- Grab firewood
- Walk around the campsite
- Handle quick outdoor tasks
without putting on another pair of shoes.
That convenience is the biggest reason I keep using them.
Fit and Sizing
The fit is comfortable right away.
There’s no break-in period, and the roomy design works well with thicker socks.
If you prefer a tighter fit, you may want to consider sizing down. Otherwise, they fit comfortably true to size.
The collapsible heel is also a small feature that makes a big difference.
On cold mornings, being able to slide them on quickly is exactly what you want.
Traction and Durability
This is where the ThermoBall Traction Mules separate themselves from normal slippers.
The rubber outsole provides real traction.
It’s not hiking boot-level grip, but it handles:
- Campgrounds
- Pavement
- Gravel
- Decks
- Dirt paths
without feeling fragile.
The ripstop upper feels durable, and the insulation holds its shape after repeated use.
They’re also lightweight enough to pack easily for camping and travel.
When They Make the Most Sense
These are ideal for:
- Van life mornings
- Cold-weather camping
- Shoulder-season trips
- Ski weekends
- Cabin stays
- Relaxing outside on cool evenings
They sit perfectly between a house slipper and an outdoor camp shoe.
Warm.
Comfortable.
Practical.
Pros
- Warm without feeling bulky
- Soft fleece interior
- Real outdoor traction
- Lightweight and packable
- Easy slip-on design
Cons
- Not waterproof
- Not designed for deep snow
- Roomy fit may not work for everyone
Final Thoughts
The The North Face ThermoBall Traction Mules V are not trying to replace a winter boot.
They’re something different.
They’re the shoe you grab when you step out of the van on a cold morning, sit around camp after a long day outside, or want something comfortable without sacrificing functionality.
They feel like a warm puffy jacket for your feet.
Simple.
Comfortable.
Useful.
That’s why they’ve become one of the first things I pack for camping trips.
Frequently Asked Questions
Are The North Face ThermoBall Traction Mules V worth it?
Yes, especially if you camp, travel, or spend time outdoors in colder weather. They’re warm, comfortable, and more versatile than a traditional slipper.
Can you wear ThermoBall Traction Mules outside?
Yes. The rubber outsole works well around campsites, vans, sidewalks, and other everyday outdoor surfaces.
Do The North Face ThermoBall Traction Mules V run true to size?
They generally fit true to size. The roomy design also leaves space for thicker socks.
Are ThermoBall Traction Mules warm enough for winter camping?
They’re excellent for cold mornings and evenings around camp, but they are not designed for hiking through deep snow.
