How does the S-4 D fit, and should I size up or down?

The S-4 D uses men's sizing and offers an ergonomic fit designed for layering. If you prefer a closer fit or are between sizes, consider sizing down. For women, sizing down from your usual women's size is recommended.

Is the S-4 D suitable for both skiing and everyday winter wear?

Yes, the S-4 D is designed for resort skiing but its minimalist style and durable Gore-Tex shell make it versatile enough for city use and other outdoor activities.

What type of down is used, and is it responsibly sourced?

The S-4 D is insulated with RDS-certified down, ensuring the filling is responsibly sourced for animal welfare.

How should I care for and clean my Gore-Tex down jacket?

Wash the jacket on a gentle cycle with mild detergent, then tumble dry on low to help restore loft. Avoid fabric softeners and bleach. Always follow the care label instructions for best results.

Can the S-4 D handle wet snow and strong winds?

The Gore-Tex 2-layer ripstop shell provides waterproof and windproof protection, making the jacket reliable in wet snow, wind, and changing mountain conditions.

Does the S-4 D work well for layering in very cold weather?

Yes, the efficient down insulation reduces the need for heavy layers, but the fit allows for easy layering with technical midlayers or base layers when temperatures drop further.

+ Zoom

A skier wears the black S-4 D Gore-Tex down jacket from The Mountain Studio, featuring a helmet-compatible hood, ergonomic fit, and minimalist design, paired with tan ski pants, brown gloves, and ski boots. image

A skier is shown from the back wearing the black S-4 D Gore-Tex down jacket by The Mountain Studio, highlighting the helmet-compatible hood, ergonomic fit, and durable ripstop shell, paired with tan ski pants and brown gloves. image

The Mountain Studio S-4 D black Gore-Tex down jacket features a minimalist design with a helmet-compatible hood, full front zipper, and durable 2-layer ripstop shell for waterproof and windproof protection. image

A person stands outdoors in the mountains wearing the green S-4 D Gore-Tex down jacket from The Mountain Studio, highlighting the helmet-compatible hood, durable ripstop shell, and minimalist alpine design. image

S-4 D

8,800.00 kr

Gore-Tex 2-layer Ski Down Jacket
Black Onyx

Size

XS

S

M

L

XL

XXL

Use our size guide

The S-4 D is designed for resort skiing and cold-weather mountain activities, built to deliver warmth and reliable protection in low temperatures. This Gore-Tex down jacket uses a 2-layer ripstop shell for waterproof, windproof, and breathable coverage. RDS-certified down insulation provides efficient thermal comfort, reducing the need for heavy layering on frigid mornings.

The internal down collar traps heat at the neck, helping retain warmth throughout long sessions on the slopes. Underarm ventilation zippers allow for quick temperature adjustment after active runs, while the helmet-compatible storm hood shields against snow and wind. Large hand pockets offer practical storage for gloves and essentials, positioned for easy access during skiing or snowboarding.

Minimalist design and refined lines reflect The Mountain Studio’s commitment to Swiss alpine engineering and timeless style. The rugged mini ripstop Gore-Tex fabric is chosen for durability and longevity, supporting years of reliable use and repairability. Responsible material choices, including RDS down, highlight a focus on sustainability without compromising performance.

Available in black and green, the S-4 D transitions easily from mountain resort to city streets. Its ergonomic fit and premium features make it a versatile insulated ski jacket for outdoor activities, winter sports, or everyday cold weather. This high quality Gore-Tex ski jacket is trusted for consistent warmth and comfort in demanding conditions.

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	56 cm	59 cm	62 cm	65 cm	68 cm	71 cm
1/2 BOTTOM HEM WIDTH	54 cm	57 cm	60 cm	63 cm	66 cm	69 cm
RAGLAN SLEEVE LENGTH	81 cm	82 cm	83 cm	84 cm	85 cm	86 cm
CENTER BACK LENGTH	76 cm	77 cm	78 cm	79 cm	80 cm	81 cm

Log in

Gore-Tex 2-layer Ski Down Jacket
Black Onyx

Developed in Switzerland.

Engineered in Switzerland

Gore-Tex 2-layer Ski Down JacketBlack Onyx

S-4 D (Black Onyx)

S-4 D (Forest Green)

Description

Features & materials

Care

Shipping & Returns

How does the S-4 D fit, and should I size up or down?

Is the S-4 D suitable for both skiing and everyday winter wear?

What type of down is used, and is it responsibly sourced?

How should I care for and clean my Gore-Tex down jacket?

Can the S-4 D handle wet snow and strong winds?

Does the S-4 D work well for layering in very cold weather?

Developed in Switzerland.

Engineered in Switzerland

Gore-Tex 2-layer Ski Down Jacket
Black Onyx