Verdict from +100 user reviews

6 reasons to buy

  • The Merrell Thermo Cross 2 Mid Waterproof receives high marks for being cozy warm.
  • Most customers agree that it’s a great winter boot for hiking, work, and casual activities.
  • Some reviewers say that it feels comfortable right out of the box.
  • The arctic Vibram sole has also impressed users for its strong grip on slippery trails.
  • Merrell has gotten five-star ratings for creating a boot that is so light.
  • Several hikers admire the footwear’s ankle support.

2 reasons not to buy

  • A few customers have expressed disappointment over the lace-up hooks. It allows too much movement of laces once tied, notes one reviewer.
  • One reviewer wishes the boot has a pull tab in the heel.

Bottom line

Light, sturdy, and warm. The Merrell Thermo Cross 2 Mid Waterproof is a versatile winter hybrid that is well-liked for being comfortable right out of the box. It’s a great shoe for hikers and casual wearers who prefer a lightweight boot that has ample protection from the elements. 

It’s one tough boot overall. One point of concern though - the metal hooks are more stable, which aren’t ideal for a hiking boot.

Tip: see the best hiking boots.

Good to know

-This waterproof boot from Merrell integrates several exclusive technologies for on-trail performance. These are the M Select DRY impermeable membrane for waterproofing, M Select WARM for insulation, and Vibram Arctic Grip Dura for durability and grip on ice.

-The full-grain leather upper keeps the water out and is less prone to wear and tear.

The Merrell Thermo Cross 2 Mid WP is a mid-cut winter boot created for men and women. It comes with a Kinetic Fit BASE insole that is contoured like your foot and a traditional lace-up closure for a more precise fit.

This hybrid footwear is made with the Arctic Grip outsole - state-of-the-art technology and so far the most advanced cold-weather gripping sole that Vibram has created. 

Specifically engineered and designed to perform on wet ice, the Arctic Grip sole is composed of wide contact areas and rubber lugs with wider support surfaces. The lugs are 5mm deep, which ensures greater traction, especially on slippery grounds.

The shoe features the FLEXconnect dual-directional flex-groove that is made from ethylene-vinyl acetate (EVA) foam. It’s lightweight, cushiony, and flexible which are ideal qualities for a light yet powerful hiking boot.

For more comfort, support, and protection from impact, a removable Kinetic Fit BASE insole is added into the boot. This Merrel exclusive footbed is made from recycled EVA. It has an intuitive shape, absolute arch coverage, and advanced heel lock.

The Merrell Thermo Cross 2 Mid Waterproof is constructed with a full-grain leather upper - a top-quality leather that does not wear out easily. The boot is lined with M Select DRY impermeable membrane, which is another Merrell technology that protects the foot from getting wet. 

What makes it super warm and comfortable is the 200g lightweight insulation, known as M Select WARM. This technology works by creating reflective micro spaces that trap the body heat, thereby creating a warm environment for the foot without the added bulk. 

The molded nylon shank holds the shoe in place while providing additional support for the arch area. Unlike their steel counterparts, nylon shanks are warmer and softer but are extremely supportive. They are also much lighter.

Finally, the upper comes with a protective rubber toe cap, a bellows tongue for keeping the debris out, and a traditional lace-up closure for a secure fit.


How Merrell Thermo Cross 2 Mid Waterproof ranks compared to all other shoes
Bottom 37% hiking boots
All hiking boots
Top 47% Merrell hiking boots
All Merrell hiking boots
Bottom 30% snow hiking boots
All snow hiking boots


The current trend of Merrell Thermo Cross 2 Mid Waterproof.
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Paul Ronto
Paul Ronto

Paul loves adventure. Over the past 20 years, he has climbed, hiked, and ran all over the world. He’s summited peaks throughout the Americas, trekked through Africa, and tested his endurance in 24-hour trail races. He has worked in the outdoor industry as a whitewater and hunting guide, gear tester, copywriter, and outfitting specialist at places like The National Outdoor Leadership School, No Barriers USA, and Sierra Trading Post. He has been quoted in NYMag, NBCNews, and Business Insider to name a few.