Who should buy the Merrell Moab FST Ice+ Thermo

The Moab FST Ice+ Thermo snow boot is another success story for Merrell. It is a solid option if you:

  • Prefer a shoe that is designed to endure wet and cold seasons.
  • Prefer a shoe that provides warmth and comfort.
  • Prefer a shoe that creates strong traction on slick surfaces.

Merrell Moab FST Ice+ Thermo logo


For this boot, Merrell has partnered with Vibram - a leading sole manufacturing company known for its quality and durable products. The Moab FST Ice+ Thermo features the Arctic Grip technology which is considered the most advanced cold weather outsole by Vibram.  

Merrell Moab FST Ice+ Thermo outsole

Excellent traction on cold, iced, or snowy surfaces

This sole is made entirely of rubber. It doesn’t contain any metal components or inserts and is specifically designed to provide traction on wet ice. Compared with other Vibram soles, the Arctic Grip has a better grip on cold, iced, or snowy surfaces.

Merrell Moab FST Ice+ Thermo outsole 1.0

Excellent grip

Aside from the high-quality, durable rubber, this Vibram outsole also features multi-directional lugs with a depth of 5mm. All these reinforce the grip and traction of the boot. Furthermore, the sole of the boot extends up to the front of the toe to provide grip at the tip and heel.

Merrell Moab FST Ice+ Thermo outsole 2.0

Comfortable cushioning

Being part of the Merrell Moab collection, the Moab FST Ice+ Thermo uses the M Select FIT.ECO blended EVA provides a good amount of cushion, support, and flexibility. It is also very light compared to rubber.

Merrell Moab FST Ice+ Thermo Comfortable cushioning

Excellent arch and heel support

The M Select FIT.ECO is an exclusive technology by Merrell. It’s basically an advanced footbed crafted from blended EVA designed to provide increased support. Meanwhile, the zonal arch and heel reinforcement give stability and comfort. 

Merrell Moab FST Ice+ Thermo Excellent arch and heel support

Lastly, the boot features the exclusive Merrell air cushion - a sealed unit in the heel section of the footwear that has ergonomic, shock-absorbent qualities.

Flexible, water-resistant, and lightweight

The Merrell Moab FST Ice+ Thermo has a 3D print upper made with leather, mesh, and Thermoplastic Polyurethane (TPU) cage which is highly flexible, water-resistant, and lightweight.

Merrell Moab FST Ice+ Thermo Flexible, water-resistant, and lightweight

Excellent insulation

Inside the shoe is a hundred grams of insulation, plus a conductor fleece lining that is very warm and soft. This footwear is also equipped with a molded nylon arch shank - a lightweight material that keeps the boot in shape. 

Merrell Moab FST Ice+ Thermo insole

Facts / Specs

Weight: Men 896g / Women 455g
Use: Snow, Day Hiking
Cut: Mid cut
Collection: Merrell Moab
Features: Insulated, Lace-to-toe / Orthotic friendly / Removable insole
Waterproofing: Waterproof
Width: Normal

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Merrell Moab FST Ice+ Thermo video reviews

Paul Ronto
Paul Ronto

Over the past 20 years, Paul has climbed, hiked, and run all over the world. He has summited peaks throughout the Americas, trekked through Africa, and tested his endurance in 24-hour trail races as well as 6 marathons. On average, he runs 30-50 miles a week in the foothills of Northern Colorado. His research is regularly cited in The New York Times, Washington Post, National Geographic, etc. On top of this, Paul is leading the running shoe lab where he cuts shoes apart and analyzes every detail of the shoes that you might buy.