Mountain Warehouse Alaskan Womens Long 3 in 1 Jacket - Waterproof

In this review of the Mountain Warehouse Alaskan Womens Long 3 in 1 Jacket the bottom line is clear: this is a practical, weather-ready coat for women who need reliable waterproofing and adaptable warmth. The jacket's single biggest selling point is its 3-in-1 system combining a fully waterproof outer shell with a detachable padded inner, so it works for heavy rain, cool drizzly days or cold winter walks. The design balances everyday style with technical features, making it a sensible choice for commuting, hiking or outdoor chores when protection from wet, windy weather is the priority.

Key Features

• Waterproof 10,000mm: The outer shell withstands high volumes of rain so it keeps you dry during sustained downpours.
• Taped Seams: All seams are taped to prevent water ingress at joins, improving overall waterproof performance.
• 3-In-1 Versatility: Wear the outer shell, the inner padded jacket alone, or both together for added insulation and weather protection.
• Detachable Inner Jacket: The padded inner can be removed for lighter use or layered separately for extra warmth on milder days.
• Adjustable Fit: The hood and cuffs are adjustable, allowing you to seal out wind and rain and get a more comfortable fit over layers.
• Thermal Tested -30 C: Lab-tested insulation performance gives confidence that the jacket will retain warmth in very cold conditions when layered appropriately.

Who It's For

The Alaskan Womens Long 3 in 1 Jacket suits women who spend time outdoors in variable weather and need a single coat that covers several seasons. It is a good pick for commuters who face heavy rain, walkers and hikers who want taped seams and breathability, and anyone who likes the option of a removable insulated liner for cold days.

Shoppers who prefer a very tailored or fashion-focused fit should check sizing carefully, as some users report it runs snug in the chest and shoulders. If you need an ultralight packable rain layer for high-output activities, a dedicated lightweight shell may be a better choice.

Pros & Cons

Pros

• Reliable waterproofing and taped seams keep moisture out in heavy rain.
• Removable padded inner provides real versatility across seasons.
• Adjustable hood and cuffs allow a customizable fit to block wind and rain.
• Longer length offers added coverage and warmth around the hips.

Cons

• Sizing can be snug in the chest and shoulders for some wearers, so consider sizing up if you plan to layer bulky clothing.
• Some customers mention the length may not suit those seeking a very long parka.

Specifications

Brand	Mountain Warehouse
Waterproof Rating	10,000mm
Breathability Rating	5,000mm
Seams	Taped seams for full waterproofing
System	3-In-1 (outer shell + detachable padded inner)
Adjustability	Adjustable hood and hook-and-loop cuffs
Thermal Test	Tested to -30 C (laboratory)

Our Verdict

The Mountain Warehouse Alaskan Womens Long 3 in 1 Jacket is a practical, good-value choice for anyone who needs dependable waterproofing and flexible warmth in one coat. Its taped seams, strong waterproof rating and removable padded inner make it especially useful for wet, cold climates. Buy it if you want a versatile everyday outer layer; just check the fit if you have broad shoulders or plan to wear heavy layers underneath.

Frequently Asked Questions

Is the inner jacket warm enough on its own?
The detachable padded inner provides useful insulation for cool weather and can be worn alone on milder days, but for very cold conditions combine it with the outer shell.

How waterproof is the outer shell?
The outer shell is rated to 10,000mm and has taped seams, which makes it suitable for heavy and sustained rain.

Should I size up for layering?
If you plan to wear thick jumpers or need more room in the chest and shoulders, consider sizing up since some wearers find the fit snug.