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Mountain Warehouse Extreme II Mens 3-in-1 Jacket

£99.99 (as of 02/09/2026 11:15 BST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The Mountain Warehouse Extreme II Mens 3-in-1 Jacket is a hooded outdoor jacket with three wear options: outer shell, inner lightweight jacket, or both together. It includes IsoDry waterproof and breathable fabric, taped seams, underarm zips, and ratings of 10,000mm waterproofing and 5,000g breathability.

SKU: B09N2BFCD2 Category:

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Quick Summary

The Mountain Warehouse Extreme II Mens 3-in-1 Jacket is a hooded men’s jacket that can be worn three ways: with the outer waterproof shell, with the inner lightweight jacket, or with both together for extra warmth. It includes taped seams, underarm zips and an IsoDry waterproof and breathable fabric.

The jacket is described for walking and hiking, with waterproof protection rated at 10,000mm and breathability rated at 5,000g.

Who It Is Best For

This jacket suits buyers who want one garment they can wear in different layers for outdoor use. It is aimed at walking and hiking, and the 3-in-1 format gives a choice between the shell, the inner jacket, or both together.

Key Details

DetailVerified information and buyer relevance
Product nameMountain Warehouse Extreme II Mens 3-in-1 Jacket.
Wear optionsCan be worn three ways: outer shell, inner lightweight jacket, or both together.
WaterproofingRated at 10,000mm and described as waterproof for heavy rain protection.
BreathabilityRated at 5,000g, with fabric that allows perspiration to pass out.
SeamsTaped seams run across stitched areas to support waterproof construction.
VentilationUnderarm zips provide extra ventilation when needed.
Intended useListed for walking and hiking.
Guarantee3 year guarantee.
Thermal testingThermal tested to -40 °C, with performance affected by health, physical activity and perspiration.

Why Buyers Choose It

  • The 3-in-1 format gives three wear options, so the jacket can be used in different conditions.
  • 10,000mm waterproofing and taped seams support the stated rain protection.
  • 5,000g breathability and underarm zips provide options for ventilation.
  • The hooded design adds another practical feature for outdoor wear.

What To Know Before You Buy

Check the selected size before ordering, as fit is not specified here. The jacket is designed for walking and hiking, so make sure the 3-in-1 style suits how you plan to wear it. The thermal test figure is laboratory tested, and actual performance will depend on health, physical activity and perspiration.

Common Buyer Questions

How many ways can this jacket be worn?
Three ways: outer shell only, inner lightweight jacket only, or both together.

Is it waterproof?
Yes, it is described as waterproof, with a 10,000mm rating and taped seams.

Does it have ventilation?
Yes, it has underarm zips for extra ventilation.

What is the jacket intended for?
It is listed for walking and hiking.

Final Buying View

If you want a men’s outdoor jacket with three wearing options, this Extreme II model gives a clear mix of waterproofing, breathability and layered use. Review the size and the 3-in-1 format before ordering to make sure it matches your needs.

Checking the Fit with Both Layers

When assessing the size, consider how the jacket fits with both pieces worn together and with any layers you expect to wear underneath. Check that the combined fit allows comfortable movement, rather than judging the size from the shell or inner jacket alone.

Brand

Mountain Warehouse

Manufacturer

Mountain Warehouse

Binding

Apparel

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