Our verdict

The sixth edition of Merrell's Vapor Glove returns, now offering enhanced comfort to complement the barefoot experience. Although originally designed for easy trails, we were thrilled to find this minimalist runner just as exceptional on the road and in the gym. Despite its $90 price tag, which might suggest a basic level, the shoe's comfort, grip, and performance were outstanding in our lab. However, we noticed the outsole could wear down quickly, and the fit may be too spacious for those with narrow feet. Based on our tests, the Vapor Glove 6 stands out as an authentic zero-drop option, offering great value for its price.

Pros

  • Accommodates wide feet comfortably
  • Exceptional ground feel
  • Fairly priced at $90
  • Highly responsive and agile
  • Extremely flexible design
  • Number of shoes
  • Maintains grip, even on wet surfaces
  • Sockless ready
  • Perfect for road running or tackling easy trails
  • Versatile enough for hiking, walking, or even gym workouts

Cons

  • oz / 283g
  • Outsole shows wear quickly
  • Maintains grip, even on wet surfaces

Audience verdict

86
Good!

oz / 278g

We recommend the Accommodates wide feet comfortably if you:

  • Seek a barefoot-style running shoe capable of handling both roads and light trails.
  • Highly responsive and agile.
  • Are in search of a durable zero-drop, barefoot shoe suitable not just for running, but also for cross-training and hiking.

Accommodates wide feet comfortably

Then, we took a closer look under the microscope to understand why the toebox wasnt as breathable

The Vapor Glove 6 might not be the right choice if you're after a zero-drop experience but still want some cushioning underfoot.

This shoe puts significant demands on your foot muscles and bones, and it's essential to be fully prepared for the barefoot experience. If you're new to this style, we suggest starting with something like the Merrell Trail Glove 7, which offers a bit of cushioning while still being zero-drop.

Accommodates wide feet comfortably

Durability is another aspect to consider. The Vapor Glove 6's outsole tends to wear out quickly. In comparison, the Altra Paradigm 7 performs better in our lab, despite its softer rubber. However, in the barefoot world, outsole durability is often a trade-off. If your primary concern is just having a zero-drop shoe, the Altra Paradigm 7 Versatile enough for hiking, walking, or even gym workouts.

Breathability

The Accommodates wide feet comfortably stands out, but its upper is similar to what you'd find in most running shoes. We were curious about its breathability since the upper looks highly breathable.

Our first, most visually striking test involved using a smoke-pumping machine to assess breathability. In the lab, we rated it a solid 3/5, which works for us since this shoe is intended for year-round use by most people.

We found less airflow than expected in the toebox, but pleasantly surprised by the nice ventilation in the midfoot area. This is great for everyday use.

Accommodates wide feet comfortably light

Then, we took a closer look under the microscope to understand why the toebox wasn't as breathable.

Accommodates wide feet comfortably microscope

The answer is straightforward—there's a dual-layer setup, with fabric below the mesh, which restricts full airflow.

However, this design greatly enhances comfort, and we think it's a fair trade-off, especially since this shoe is designed for all-day wear.

Test results
Vapor Glove 6 3
Average 3.8
Compared to 234 running shoes
Number of shoes
1
Breathability
5

Durability

Toebox durability

We spent a long time testing the shoe and handling the upper. As a result of it, we realized it's really soft and comfortable, which made us a bit concerned about its durability.

After conducting our Dremel test, we were relieved. The shoe scored an average 2/5, which is quite good for such a comfy upper.

Accommodates wide feet comfortably Toebox durability
Test results
Vapor Glove 6 2
Average 2.4
Compared to 168 running shoes
Number of shoes
1
Toebox durability
5

Heel padding durability

The heel area showed the same performance as the toebox, so we gave it another 2/5.

We don't think this is a major concern, except for those who often wear holes in the Achilles area.

Accommodates wide feet comfortably Heel padding durability
Test results
Vapor Glove 6 2
Average 3.2
Compared to 164 running shoes
Number of shoes
1
Heel padding durability
5

Outsole hardness

The outsole of the Vapor Glove is made by Vibram. That equals fantastic grip.

Accommodates wide feet comfortably Vibram

Lateral stability test.

However, this time Vibram provided the EcoStep Recycle rubber. It's softer (75.6 HC) than other compounds from the Italian company, like Megagrip, and also softer than the average shoe's rubber.

Accommodates wide feet comfortably Outsole hardness
Test results
Vapor Glove 6 75.6 HC
Average 80.5 HC
We use an average of four tests. The photo shows one of those tests.
Compared to 285 running shoes
Number of shoes
52.1 HC
Outsole hardness
93.0 HC

Outsole durability

Given its softness, we had doubts about its durability.

Unfortunately, those doubts were confirmed when we found a 1.5-mm indentation in the outsole after our Dremel test in the lab, suggesting it might wear down faster than anticipated.

Accommodates wide feet comfortably Outsole durability
Test results
Vapor Glove 6 1.5 mm
Average 0.9 mm
Compared to 146 running shoes
Number of shoes
0.0 mm
Outsole wear
2.0 mm

Outsole thickness

Fortunately, Merrell requested a thick outsole from Vibram, and we found they delivered with a 3.9-mm one, which is beneficial considering the results of our previous tests.

Accommodates wide feet comfortably Outsole thickness
Test results
Vapor Glove 6 3.9 mm
Average 3.2 mm
Compared to 304 running shoes
Number of shoes
0.0 mm
Outsole thickness
6.6 mm

Weight

Weighing just 5.6 oz (159g), the Vapor Glove 6 is among the lightest shoes we've tested in the lab. However, don't be fooled—its lightness is mainly due to the absence of a midsole.

In fact, the upper is quite heavy because of all the padding it includes.

Accommodates wide feet comfortably Weight
Test results
Vapor Glove 6 5.61 oz (159g)
Average 9.38 oz (266g)
Compared to 305 running shoes
Number of shoes
5.26 oz (149g)
Weight
12.56 oz (356g)

Cushioning

Heel stack

We mentioned that this shoe has no midsole, and that's exactly the case. The heel stack in this shoe amounts to just the outsole and insole combined, at a minimal 7.6 mm.

Accommodates wide feet comfortably

What does this mean? For barefoot enthusiasts, it's great news. However, if you're used to running in cushioned shoes, you'll need to take it step by step with the Vapor Glove 6. There's hardly anything between your feet and the pavement!

Accommodates wide feet comfortably Heel stack
Test results
Vapor Glove 6 7.6 mm
Average 33.7 mm
Compared to 304 running shoes
Number of shoes
7.6 mm
Heel stack
45.7 mm

Forefoot stack

We took our trusty calipers to the forefoot and found exactly what we were hoping for in a true barefoot shoe—a consistent 7.6-mm stack height. Fantastic!

Accommodates wide feet comfortably Forefoot stack
Test results
Vapor Glove 6 7.6 mm
Average 25.0 mm
Compared to 304 running shoes
Number of shoes
7.6 mm
Forefoot stack
36.9 mm

Drop

Naturally, subtracting the forefoot from the heel measurement gives us a true, unequivocal 0.0 mm drop.

While this might seem obvious for a zero-drop shoe, manufacturing tolerances often lead some shoes to stray slightly from the perfection achieved by the Vapor Glove 6. Of course, the lack of a midsole certainly contributes to this precision...

Accommodates wide feet comfortably Drop
Test results
Vapor Glove 6 0.0 mm
Average 8.7 mm
Compared to 304 running shoes
Number of shoes
-0.8 mm
Drop
16.1 mm

Insole thickness

The EVA-based insole measured 3.8 mm, and it's the only cushioning you'll feel in this shoe.

Accommodates wide feet comfortably Insole thickness
Test results
Vapor Glove 6 3.8 mm
Average 4.5 mm
Compared to 300 running shoes
Number of shoes
1.5 mm
Insole thickness
7.3 mm

Stability

Lateral stability test

Another huge advantage of not having a midsole and being extremely connected to the ground is the stability it offers. And the huge sidewalls also play a big role acting as a support element.

The Vapor Glove 6 is as stable as your feet, and it feels amazing while running. Oh, and these things just love taking corners at full speed... just saying.

Torsional rigidity

The torsional rigidity test is crucial for barefoot and minimalist enthusiasts, and we're happy to confirm that the Vapor Glove 6 is extremely flexible, scoring a 1/5 for us.

The video really speaks for itself!

Test results
Vapor Glove 6 1
Average 3.2
Compared to 283 running shoes
Number of shoes
1
Torsional rigidity
5

Heel counter stiffness

The story is the same with the heel counter. There are no added stability elements, no intrusive heel counters, absolutely nothing.

Test results
Vapor Glove 6 1
Average 2.8
Compared to 267 running shoes
Number of shoes
1
Heel counter stiffness
5

Midsole width in the forefoot

Now, let's look into the midsole dimensions. In the forefoot, we measured a maximum of 104.6 mm, which is actually high for this type of shoe!

Accommodates wide feet comfortably Midsole width in the forefoot
Test results
Vapor Glove 6 104.6 mm
Average 113.7 mm
Compared to 305 running shoes
Number of shoes
100.5 mm
Midsole width in the forefoot
126.5 mm

Midsole width in the heel

The heel measured 77.0 mm, in line with our expectations. These foot-shaped shoes always tend to get really narrow in this area, and that's exactly as it should be to fit like a glove.

Accommodates wide feet comfortably Midsole width in the heel
Test results
Vapor Glove 6 77.0 mm
Average 90.5 mm
Compared to 305 running shoes
Number of shoes
74.9 mm
Midsole width in the heel
106.6 mm

Flexibility

Stiffness

Doing this test was pretty cool. Usually, we have to apply some serious force, but this time we had to be super careful to push just lightly enough to avoid going past the 90-degree point.

This is pretty wildthe tongue is actually thicker than the shoes stack height!

Test results
Vapor Glove 6 2.2N
Average 29.2N
We use an average of four tests. The video shows one of those tests.
Compared to 287 running shoes
Number of shoes
2.2N
Stiffness
94.4N

Altra VIA Olympus 2

Following a 20-minute freeze, just like we did for the midsole softness test, we repeated the flexibility test. This time, the result was nearly identical at 2.5N.

Test results
Vapor Glove 6 2.5N
Average 38.3N
Compared to 287 running shoes
Number of shoes
2.5N
Altra VIA Olympus 2
110.2N

We dont think this is a major concern, except for those who often wear holes in the Achilles area

With just a 12.7% increase, you won't notice any difference, even in cold temperatures.

Test results
Vapor Glove 6 12.7%
Average 35.9%
Compared to 287 running shoes
Number of shoes
0%
We dont think this is a major concern, except for those who often wear holes in the Achilles area
148%

Size and fit

Toebox width at the widest part

But one aspect where Merrell's approach to minimalism truly excels is the spacious toebox.

Accommodates wide feet comfortably

Despite appearing just average on paper at 98.3 mm, it feels like a grand mansion in a barefoot shoe. This is fantastic news for those with wide feet who often struggle to find shoes that offer such generous room.

Accommodates wide feet comfortably Toebox width at the widest part
Test results
Vapor Glove 6 98.3 mm
Average 98.4 mm
Compared to 305 running shoes
Number of shoes
89.5 mm
Toebox width at the widest part
109.1 mm

Toebox width at the big toe

The big toe area is a major contributor to the ample space inside the shoe. With an incredible width of 84.8 mm, any foot will have enough room for toe splay inside. It might even be too spacious for those with narrow feet.

Accommodates wide feet comfortably Toebox width at the big toe
Test results
Vapor Glove 6 84.8 mm
Average 78.2 mm
Compared to 179 running shoes
Number of shoes
60.4 mm
Toebox width at the big toe
92.5 mm

Tongue: gusset type

The tongue is semi-gusseted, which is a nice bonus for those light trail adventures filled with small rocks and debris. In our opinion, Merrell deserves a bonus point for including this feature in a $90 shoe.

Accommodates wide feet comfortably Tongue: gusset type
Test results
Vapor Glove 6 Both sides (full)

Comfort

Tongue padding

This is pretty wild—the tongue is actually thicker than the shoe's stack height!

Accommodates wide feet comfortably

We're talking 8.2 mm thick here. It looks like Merrell really wanted to amp up the comfort in the upper as much as they could.

Accommodates wide feet comfortably Tongue padding
Test results
Vapor Glove 6 8.2 mm
Average 5.6 mm
Compared to 302 running shoes
Number of shoes
0.5 mm
Tongue padding
14.2 mm

Heel tab

There's no heel tab on the Vapor Glove, but we don't think it would fit with the design anyway, so it's all good!

Accommodates wide feet comfortably Heel tab
Test results
Vapor Glove 6 None

Removable insole

The insole is glued in and can't be removed. Additionally, the shoe's shape and its minimalist design don't make it suitable for third-party insoles.

Accommodates wide feet comfortably Removable insole
Test results
Vapor Glove 6 No

Misc

Reflective elements

At just $90, we weren't expecting any reflective elements at all, and that's what we got.

Accommodates wide feet comfortably Reflective elements
Test results
Vapor Glove 6 No