US
Merrell

Merrell Thermo Chill Mid Snow Boot

  • 200 grams low bulk insulation
  • Waterproof membrane, waterproof coated leather
  • Fleece lining
  • 6 inch boot shaft, ankle high
  • Removable Kinetic Fit BASE insole
  • 1.1 pounds

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A light insulated waterproof boot for winter walks and cold weather hiking. The insulation is moderate, so it suits active use in the cold more than standing still in deep freeze conditions.

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ASIN: B07ZL49RRNCategory: Snow & Winter Sports Boots

Sizes Available

77 Wide7.5 Wide7.5

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Overview

Winter walkers and cold weather hikers get a waterproof ankle boot with fleece lining and low bulk insulation. A membrane seals out water while letting moisture escape, and a sticky rubber outsole grips slick ground.

Moderate insulation in a light boot makes it warm enough for active winter days without feeling clunky. The listing gives no temperature limit, so people standing in extreme cold may want heavier insulation.

Who it's for

People hiking snowy trails or walking dogs on winter mornings get warmth, dry feet and grip in a light package. Those spending hours stationary in severe cold should look at a heavier insulated boot.

Pros and cons

Pros
  • Waterproof membrane breathes
  • Fleece lining adds warmth
  • Removable contoured insole
  • Rubber toe cap protects
Cons
  • Moderate insulation only
  • No temperature limit listed
  • Ankle height lets deep snow in

Performance notes

Warmth depends on the insulation weight and fleece lining, which hold heat well while moving and lose ground during long stops. The membrane blocks outside water while vapor escapes, so feet stay drier from sweat as well. Traction comes from the sticky rubber outsole, and the nylon shank adds stability on uneven ground.

Specifications

BrandMerrell
Dimensions & fit
Boot Shaft Height6 inches
Item weight1.1 pounds
Construction & materials
Sole MaterialMerrell sticky rubber
Insole MaterialRemovable Kinetic Fit BASE contoured insole
ColorBlack
Other details
Water Resistance LevelWaterproof membrane, waterproof coated leather
Closure TypeLace-up
Toe StyleRound toe, protective rubber toe cap
Boot Form TypeSnow boot
Shaft Circumference5 inches
Insulation200 grams low bulk
Lining DescriptionFleece
MidsoleEVA foam, molded nylon arch shank

Frequently asked questions

Can I put my own orthotic in the Merrell Thermo Chill Mid?

Yes. The Kinetic Fit BASE contoured insole is removable.

How warm is the Merrell Thermo Chill Mid Waterproof?

It has 200 grams of low bulk insulation and a fleece lining. No temperature limit is listed.

Is the Merrell Thermo Chill Mid waterproof?

Yes. It has a waterproof membrane and a waterproof coated leather upper.

How tall is the Merrell Thermo Chill Mid?

The boot shaft is listed at 6 inches, ankle high.