How does the Z-4 shell jacket fit, and what size should I choose?

The Z-4 has a comfortable, ergonomic fit with stretch fabric for easy movement. It is a unisex jacket based on men's sizing. For women, consider sizing down for a closer fit. Refer to the size chart for guidance.

Is the Z-4 suitable for both resort and backcountry skiing?

Yes, the Z-4 is designed for active use on groomed runs and in backcountry terrain. Its 3-layer ALP-3 ripstop fabric provides reliable protection and breathability in changing mountain conditions.

Can I wear the Z-4 for hiking or everyday outdoor activities?

The Z-4 shell jacket works well for hiking, travel, and city use thanks to its minimalist design, weatherproof construction, and versatile features.

How should I care for and wash the Z-4 shell jacket?

Wash the jacket inside out in cold water (up to 40°C) with mild detergent. Close all fasteners before washing. Tumble dry at low heat and avoid bleach, fabric softener, or dry cleaning.

Does the Z-4 shell jacket offer protection in harsh weather?

The Z-4 is waterproof, windproof, and highly breathable, with a helmet-compatible hood and snow skirt for added protection during cold, wet, or windy conditions.

Is the Z-4 available in multiple colors?

Yes, the Z-4 comes in black and beige. Both options feature a clean, modern look.

+ Zoom

The Mountain Studio Z-4 shell jacket in beige, featuring a helmet-compatible hood, waterproof ALP-3 fabric, taped seams, and minimalist design with multiple zippered pockets. image

Side view of a person wearing The Mountain Studio Z-4 shell jacket in beige with helmet-compatible hood, matching beige ski pants, brown gloves, and ski boots, highlighting the jacket’s ergonomic fit and minimalist alpine style. image

Back view of a person wearing The Mountain Studio Z-4 shell jacket in beige with helmet-compatible hood, paired with matching beige ski pants and brown gloves, emphasizing the jacket’s ergonomic fit and minimalist alpine design. image

Person wearing The Mountain Studio Z-4 shell jacket in beige with helmet-compatible hood, matching ski pants, black gloves, and ski boots, shown in a studio setting to highlight the jacket’s minimalist alpine design and technical features. image

Close-up of the interior of The Mountain Studio Z-4 shell ski jacket, showing the zippered chest pocket, taped seams, and internal snow skirt, highlighting technical storage and weatherproof construction. image

Z-4

7,000.00 kr

3-layer Shell Jacket
Castle Wall

Size

XS

S

M

L

XL

XXL

Use our size guide

The Z-4 shell jacket from The Mountain Studio is designed for active skiing and snowboarding in resort and backcountry terrain. This mountain ski jacket uses a soft, durable 3-layer ALP-3 mini ripstop fabric that is waterproof, windproof, and highly breathable. Seam-free shoulders and high-reach arm construction deliver unrestricted movement, while the ergonomic fit ensures comfort during long days in harsh weather.

Technical features support reliable performance in changing conditions. The helmet-compatible hood, internal snow skirt, and ski pass pocket offer practical functionality for mountain use. Underarm ventilation zippers provide responsive airflow control, and fully taped seams with YKK Aquaguard zippers enhance weatherproof protection. The jacket includes two chest pockets, two hand pockets, and an inside chest pocket for secure storage.

Minimalist design and refined detailing create a clean silhouette, available in black and beige. The stretch fabric and signature sidecut hem and cuffs contribute to a tailored fit and modern look. This ski shell jacket transitions easily from groomed runs to powder, and suits city use or outdoor activities beyond the slopes.

Sustainability is addressed through PFAS-free DWR treatment and a repair kit included for long-term wear. The Mountain Studio focuses on responsible material choices and swiss alpine engineering, ensuring the Z-4 shell jacket remains reliable season after season. Built for men and women, this three layer technical shell jacket balances comfort, durability, and timeless style.

What’s my size?

We feel that the best method to determine your size is to measure a similar favorite garment you already own – i.e. an insulated ski jacket if you are buying an insulated ski jacket etc. Compare with the chart below which is unique for each product. Please bear in mind that our shell garments are made to be quite loose fitting, to be able to add one or more layers beneath.

Flip horizontal to view full size chart on mobile.

How to measure

1/2 CHEST: Measure straight 1 cm below armhole from side to side
1/2 BOTTOM HEM WIDTH: Measure straight at bottom hem from side to side
SLEEVE LENGTH: Measure from high shoulder point to sleeve
CENTER BACK LENGTH: Measure at the back side straight from center neckline to bottom hem in the center

Size	XS	S	M	L	XL	XXL
1/2 CHEST	53 cm	56 cm	59 cm	62 cm	65 cm	68 cm
1/2 BOTTOM HEM WIDTH	52.5 cm	55 cm	58.5 cm	61.5 cm	64.5 cm	67.5 cm
RAGLAN SLEEVE LENGTH	78 cm	79 cm	80 cm	81 cm	82 cm	83 cm
CENTER BACK LENGTH	77.5 cm	78.5 cm	79.5 cm	80.5 cm	81.5 cm	82.5 cm

Alp-3 is The Mountain Studio’s proprietary membrane technology. It's a hydrophilic membrane that delivers an excellent 30,000 mm water column and 30,000 g/m2/24 hrs breathability. This supple 3-layer stretch fabric is made from nylon and spandex, and has been given a PFAS-free DWR treatment on the outside.

3-layer Shell Jacket Castle Wall

Z-4 (Castle Wall)

Z-4 (Black Onyx)

Description

Features & materials

Care

Shipping & Returns