Men’s Winter Rubber Boots Kamik Icebreaker -40° confort rating

Reference KAICEBR

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€109.90 TTC

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SUMMARY

The Icebreaker is the men's rubber work boot from Kamik, Canadian boot maker since 1898. One-piece moulded RubberHe rubber, 37 cm shaft, adjustable nylon collar: water does not get through, whether slush, mud or icy water. Removable 8 mm Zylex® liner for warmth down to −40 °C / −40 °F, acid- and oil-resistant outsole. Pull-on, EU sizes 41 to 46.

TECHNICAL DESCRIPTION

Men's Winter Boots Kamik Icebreaker

ProtectionExtreme Cold

Shaft height37 cm

Insulation8 mm Zylex® liner

Thermal protection−40 °C / −40 °F*

Thermal insulationRubberHe rubber + Zylex® liner

Icy water up to the calf and −40 °C / −40 °F: the one-piece rubber boot that lets nothing in

The Icebreaker is the men's rubber work boot from Kamik, the Canadian maker based in Montréal since 1898. Its one-piece moulded RubberHe rubber rises to 37 cm: no seams, no membrane, water does not get through, whether slush, mud or icy water. An adjustable 1000D nylon collar closes the top of the shaft against snow and wind.

Inside, the 8 mm Zylex® liner, three layers, comes out to dry in the evening and is replaced when it wears; an 11 mm Zylex® footbed screens the foot from the ground. The TRACKER outsole resists acids and hydrocarbons, with deep lugs for mud and snow.

Pull-on, no laces. Available in EU sizes 41 to 46.

Grand-Froid expert's view

We get asked whether a rubber boot can hold −40 °C / −40 °F. On two conditions: a thick liner you pull out every evening, and room for it — one size up, with Heat Holders merino socks. The Icebreaker is the boot for days when you do not know what you will wade through: flooded ditch, muck, slush. One-piece rubber does not ask the question.

Men's winter boots Kamik Icebreaker B20706 - Extreme cold −40 °C / −40 °F

What is it designed for?

The Icebreaker is made for work and outings in cold, wet ground, where a seam-sealed boot shows its seams: water, mud, muck, slush.

Forestry and winter logging: Québec, Scandinavia, the Alps, whole days in slush and flooded ruts
Farm, livestock and stables in deep cold: muck, water troughs, muddy yards, the rubber hoses off in the evening
Building sites and roadworks in cold regions: flooded trenches, salt, hydrocarbons, the outsole stands up to them
Hunting and fishing on wet ground: frozen marsh, riverbank, a hide in wet snow, the foot dry up to the calf
Snow clearing and outdoor chores: slushy drive, ditch to clear, the boot you pull on without lacing
Pair with the Heat Holders men's long merino wool socks for a dry foot in a boot that does not breathe

Thermal protection

Rubber does not insulate: the 8 mm Zylex® liner provides the warmth, holding a volume of still air around the foot, and the 11 mm footbed cuts the cold from the ground. Rubber does not breathe either: perspiration stays inside; the three-layer liner keeps it away from the skin — pull it out every evening, a damp liner insulates less. The comfort rating applies on the move, with a thick sock; standing still for long periods, the size up becomes essential so as not to compress the liner.

Technical specifications

Upper and base — one-piece moulded RubberHe synthetic rubber, recyclable
Shaft height — 37 cm
Collar — 1000D nylon, drawcord
Liner — 8 mm Zylex®, three layers, 97% recycled content, removable, replacement available from the maker
Footbed — 11 mm Zylex®
Outsole — TRACKER RubberHe, deep lugs, acid and oil resistant
Weight — 2,132 g per pair
Sizes — EU 41 to 46

Composition

RubberHe synthetic rubber — upper, base and outsole
1000D nylon — adjustable collar
8 mm Zylex® — removable insulating liner, 97% recycled
11 mm Zylex® — footbed

Size guide

Men's fit, true to size. To measure: stand barefoot on a sheet of paper with your heel against the wall, mark the tip of your longest toe and read the length off the table. To choose: this boot is worn with a thick sock and an 8 mm liner — take one size up. Compressed, the liner no longer insulates and the foot gets cold.

EU size	Foot length
41	25.3 cm
42	26.1 cm
43	27.0 cm
44	27.8 cm
45	28.7 cm
46	29.5 cm

Between two sizes, choose the larger one.

Care & Durability

Take the liner out after every day and dry it separately, in the air
Hose the boot down or rinse with lukewarm water, muck and mud included; soft brush on the outsole
Air dry at room temperature, shaft open; never against a radiator or stove, direct heat cracks the rubber
Store upright, out of the sun: UV ages rubber
No washing machine or tumble dryer, for the boot or the liner
No solvent or chemical treatment on the rubber
Worn liner: replace it rather than the boot

Return or exchange — 30 days

You have 30 days after receipt to request a return or exchange for this item.

Why choose the Icebreaker?

The only construction that holds water without reservation: one-piece moulded rubber, with no seam to seal and no membrane to look after. The removable Zylex® liner brings the warmth rubber does not give; it is replaced when the boot itself is still sound. It is the Canadian work boot in its most rustic form — and its most durable.

Why the feet lose heat first:

Wet before cold: a foot in water at 2 °C / 36 °F loses heat far faster than a dry foot at −20 °C / −4 °F; on wet ground, waterproofing comes before thickness
Contact with the ground: on ice or frozen earth, heat drains downwards by conduction, continuously — the 11 mm footbed is the screen
Trapped perspiration: rubber does not breathe; the three-layer liner keeps moisture away from the skin, provided it starts the day dry

Feet that stay cold often point to heat lost elsewhere — cover the head first. Under the boot, the Heat Holders long merino socks complete the system. A rubber boot does not die of wear, it dies of the stove and the sun: stored upright in the shade, it lasts ten winters.

* Indicative temperature. Perceived warmth varies with activity, body type, humidity, wind and the layers worn underneath.