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Siroko

Siroko W4 Vostock softshell jacket

Price without code 139.99

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Features of Siroko W4 Vostock

Product description of Siroko W4 Vostock softshell jacket

Description summary

Features:

- Eco-friendly innovative Sorona® Aura insulation. Partially plant-based and easily recyclable
- Front two-way zipper closure with storm flap and dual snap button
- High collar with micro-fleece lining for extra protection against wind and cold
- Adjustable hood with drawcords and rear volume adjuster
- Two-way pit zips with mesh fabric for optimal ventilation
- Adjustable Velcro cuffs with thumbholes
- Waterproof, elasticated and detachable snow skirt
- Adjustable bottom hem with elastic drawstring
- Four zippered outer pockets: two on the sides and two on the chest
- Two inner pockets: one mesh fabric pocket on the side and one zippered multimedia pocket on the chest with headphone port and microfiber cloth for cleaning goggles
- Zippered forearm ski pass pocket
- Loose fit for greater ease of movement


Specifications:

- Waterproof: up to 10,000 mm water column
- Breathable: breathability rating up to 10,000 g/m²/day


Care:

- Hand wash cold
- Machine wash at 30ºC, use the recommended amount of detergent, separate the colors and use a laundry bag if possible.
- Do not bleach
- Do not iron
- Do not dry clean
- Do not tumble dry

Specifications

Manual

Technical specifications of Siroko W4 Vostock

Features of Siroko W4 Vostock

Hood With Hood

Hood

With Hood

Color Black

Color

Black

Features Thermal

Features

Thermal

Waterproof

Waterproof

Windproof

Windproof

Stretch

Stretch

Gender Men

Gender

Men

Women

Women

Kind of Jacket Soft Shell

Kind of Jacket

Soft Shell

Key differentiators

Designed with a waterproof (up to 10,000 mm) and windproof construction for weather protection.

Features Sorona® Aura insulation, which is partially plant-based, for reliable warmth.

Includes a detachable, elasticated snow skirt to seal out snow and cold.

Offers extensive storage with seven pockets, including dedicated multimedia and ski pass pockets.

Provides customizable comfort with an adjustable hood, cuffs, hem, and two-way pit zips for ventilation.

Technology in Siroko W4 Vostock softshell jacket

Energy rating

Warnings

/ 5

1 Reviews

What our customers are saying about Siroko W4 Vostock softshell jacket

Write a review about this product

Answer the question

Write your answer

The question has already been answered, thank you very much for trying to help another customer. We will count on you for future questions.

Include AI Generated questions and answers

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

What are the main features of the Siroko W4 Vostock Softshell Jacket?

Answer of Generated by AI and verified

The Siroko W4 Vostock is a waterproof and windproof softshell jacket designed for thermal protection. It features stretch fabric for ease of movement, an adjustable fit, and includes a hood. The jacket is insulated with Sorona® Aura technology and has a comfortable micro-fleece lining.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

Is the Siroko W4 Vostock jacket suitable for both men and women?

Answer of Generated by AI and verified

Yes, this jacket has a unisex design, making it suitable for both men and women.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

What kind of lining does this jacket have?

Answer of Generated by AI and verified

This jacket features a soft micro-fleece lining for added comfort and warmth.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

What insulation technology is used in the W4 Vostock jacket?

Answer of Generated by AI and verified

The Siroko W4 Vostock jacket uses Sorona® Aura insulation, which is partially plant-based.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

Is the Siroko W4 Vostock jacket waterproof and windproof?

Answer of Generated by AI and verified

Yes, this jacket is designed to be both waterproof and windproof, offering protection from the elements.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

Does this jacket have a hood?

Answer of Generated by AI and verified

Yes, the Siroko W4 Vostock jacket comes with an included hood.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

What is the fabric type of this jacket?

Answer of Generated by AI and verified

This is a softshell jacket, which provides a balance of weather resistance and stretch.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

How much does the Siroko W4 Vostock jacket weigh?

Answer of Generated by AI and verified

The product weight for this jacket is 1.26 kg.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

Can I adjust the fit of the W4 Vostock jacket?

Answer of Generated by AI and verified

Yes, the jacket is adjustable. It features adjustable Velcro cuffs with thumbholes and an adjustable bottom hem with an elastic drawstring to help you customize the fit.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

How should I care for my Siroko W4 Vostock jacket?

Answer of Generated by AI and verified

We recommend washing this jacket in cold water. You can machine wash it at 30°C, preferably separating colors and using a laundry bag. Do not use bleach, iron, dry clean, or tumble dry the jacket.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

How does the W4 Vostock jacket compare to the Silvini Deruta jacket?

Answer of Generated by AI and verified

The Siroko W4 Vostock is a softshell jacket made from synthetic materials, weighing 1.26 kg. It features Sorona® Aura insulation. In contrast, the Silvini Deruta jacket is made from 100% nylon, is significantly lighter at 0.35 kg, and uses Primaloft® Silver Insulation Active 60 g.

* Generated by AI based on customer and product data

2026-10-31

Generated by AI and verified

Siroko W4 Vostock softshell jacket

Is the W4 Vostock heavier than the W1 Lapland jacket?

Answer of Generated by AI and verified

Yes, the Siroko W4 Vostock jacket weighs 1.26 kg, while the Siroko W1 Lapland jacket is lighter, weighing 0.5 kg.

* Generated by AI based on customer and product data

Ask a technical question about this product

Frequently bought together
Best sellers

Use cases

Cold Weather Hiking & Trekking 90% Fit

This jacket is an excellent choice for hiking in cold and windy conditions. Its windproof and waterproof properties provide reliable protection from the elements, while the thermal insulation and micro-fleece lining offer essential warmth without excessive bulk.

Windproof fabric,Waterproof construction,Thermal properties,Micro-fleece lining

Resort Skiing & Snowboarding 80% Fit

With its thermal insulation, waterproof and windproof design, and stretch fabric, this jacket is a practical option for resort skiing or snowboarding. The stretch material allows for a good range of motion, which is essential for these activities.

Waterproof,Windproof,Thermal insulation,Stretch fabric

General Outdoor Activities in Mixed Weather 90% Fit

This jacket's versatility makes it ideal for a range of general outdoor pursuits like snowshoeing or winter walks. The softshell fabric offers a balance of protection and comfort, and the included hood provides extra defense against wind and precipitation when needed.

Softshell fabric,Hood included,Adjustable features,Waterproof and windproof

Cold-Weather Commuting and Urban Exploration 70% Fit

For daily commutes or exploring the city in cold, damp weather, this jacket provides reliable protection. Its windproof and waterproof nature keeps you comfortable, while the micro-fleece lining adds a layer of cozy warmth for everyday wear.

Windproof,Waterproof,Micro-fleece lining,Sorona® Aura insulation

Best for

Best for All-Weather Mountain Use

This jacket provides great value for outdoor activities. Its softshell fabric is waterproof and windproof, offering reliable protection from the elements. The stretch material ensures you can move freely, while the Sorona® Aura insulation provides practical warmth. It's an easy-to-wear, beginner-friendly option for various mountain conditions.

Based on: fabric_type: Softshell, Key attributes: Stretch, Thermal, Waterproof, Windproof, Key technology: Sorona® Aura

Ideal for Casual Skiing & Snowboarding

This jacket is a great starting point for snow sports. It's waterproof and windproof to keep you dry and warm, and features like a hood and adjustable elements provide extra protection. The softshell design offers freedom of movement, making it a comfortable and affordable choice for those new to skiing or snowboarding.

Based on: jacket_type: Softshell, Key attributes: Waterproof, Windproof, Thermal, Stretch, Hood included: yes

Great for Everyday Winter Comfort

With its windproof and waterproof design, this jacket is a reliable choice for daily wear in unpredictable weather. The thermal properties and soft micro-fleece lining offer everyday comfort and warmth. Its versatile style makes it easy to wear around town, providing affordable quality for your commute.

Based on: feel: micro-fleece lining, Key attributes: Thermal, Waterproof, Windproof, Jacket type: Softshell

Benefits

FunctionalStay Dry and Shielded from the Elements

Engineered to handle adverse weather, this jacket is both waterproof and windproof. It provides reliable protection from rain, snow, and wind, ensuring you remain comfortable during outdoor activities.

Waterproof: yes

Windproofing: Windproof

Key attributes: Stretch

Thermal

Waterproof

Windproof

FunctionalAdapt Your Fit and Temperature on the Go

Featuring multiple adjustment points, including an adjustable hood, cuffs, and bottom hem, you can tailor the fit for optimal comfort and protection. Two-way pit zips with mesh fabric also allow for quick and effective ventilation to manage your temperature during strenuous activity.

Adjustable: yes

Hood included: yes

FunctionalKeep Your Essentials Organized and Accessible

With a total of seven pockets, including four zippered outer pockets, two inner pockets, and a dedicated forearm ski pass pocket, you can securely store all your essentials. A specialized multimedia pocket includes a headphone port and a microfiber cloth for cleaning goggles.

FunctionalChoose Warmth with an Eco-Conscious Design

The jacket utilizes Sorona® Aura insulation, an innovative, eco-friendly material that is partially plant-based and easily recyclable. This provides effective thermal performance while representing a more environmentally responsible choice.

Key technology: Sorona® Aura

Primary technology: Sorona® Aura

Ideal buyer profiles

Ski Enthusiast

This individual is passionate about skiing and snowboarding and seeks gear that offers technical performance, protection, and on-mountain convenience. They need a jacket that can handle variable weather conditions, from wind and snow to milder, sunnier days, while providing warmth and freedom of movement.

The Siroko W4 Vostock is an excellent choice due to its waterproof and windproof softshell construction, which provides essential protection from the elements. The thermal properties, powered by Sorona® Aura technology, offer warmth without excessive bulk, while the stretch fabric ensures unrestricted movement on the slopes. Features like a hood, adjustable cuffs, and multiple pockets add practical utility for a full day on the mountain.

Outdoor Adventurer

This buyer engages in a variety of outdoor activities, such as hiking, snowshoeing, or general cold-weather exploration. They value versatile, durable gear that can adapt to different conditions and activities, prioritizing functionality, weather resistance, and comfort.

This jacket's combination of waterproof, windproof, and thermal features makes it a highly versatile outer layer for many cold-weather adventures. The synthetic softshell material is built to withstand outdoor use, and the micro-fleece lining adds a layer of comfort. Its adjustable elements and included hood allow the wearer to adapt to changing weather, making it a reliable piece for various excursions.

Eco-Conscious Explorer

This individual prioritizes sustainability in their purchasing decisions, looking for high-performance outdoor gear made with environmentally considerate materials. They seek products that align with their values without compromising on functionality, warmth, or durability for their adventures.

The W4 Vostock jacket is a strong candidate because it features Sorona® Aura insulation. This technology is noted for being partially plant-based, offering a more sustainable choice for thermal insulation. This allows the Eco-Conscious Explorer to have a high-performing, waterproof, and windproof jacket for their activities while supporting the use of innovative, sustainability-minded materials.

Competitive features

When selecting an all-around technical jacket, it's important to weigh features like weather protection, insulation, and specific design elements. We're comparing the Siroko W4 Vostock Softshell Jacket to several other options to help you understand where it stands out. This analysis focuses on key attributes to clarify which jacket best suits your needs.

Where it excels

The Siroko W4 Vostock Softshell Jacket is engineered for comprehensive weather defense, featuring a waterproof and windproof softshell fabric. This makes it a reliable choice for variable conditions where protection from the elements is key. It incorporates Sorona® Aura insulation, a partially plant-based technology, offering thermal properties for warmth. This is complemented by a comfortable micro-fleece lining. This jacket is packed with features designed for outdoor activities, including an adjustable hood, a zipper closure, and multiple pockets. Its unisex design offers versatility for a wide range of users.

Consider alternatives if...

Verdict

The Siroko W4 Vostock Softshell Jacket is a highly functional and versatile piece of outerwear. With its combination of waterproof and windproof properties, Sorona® Aura insulation, and a feature-rich design including an adjustable hood and micro-fleece lining, it's well-equipped for various outdoor pursuits. Its unisex fit and comprehensive feature set make it a strong contender for anyone seeking a single jacket that can handle changing weather conditions without compromising on comfort or utility.

Specs comparison

Favorite On Favorite Off
Favorite On Favorite Off
Favorite On Favorite Off
MaterialSynthetic100% Polyester--
Product Weight1.26 kg0.5 kg0.5 kg0.5 kg
Closure SystemZipperZipper-Zipper
TypeJacketjacketjacketjacket
Outer Material TypeSyntheticSyntheticSyntheticSynthetic
Jacket TypeSoftshellinsulated down-Soft Shell
Kind Of JacketSoft Shellinsulated downSoft ShellSoft Shell
Key AttributesStretch, Thermal, Waterproof, WindproofCompressible, Stretch, Thermal, Waterproof, WindproofStretch, Thermal, Waterproof, WindproofStretch, Thermal, Waterproof, Windproof
Primary TechnologySorona® AuraZermolyTPU membrane-
Key TechnologySorona® AuraZermolyTPU membraneSorona® Aura
Fabric TypeSoftshell-softshellSoft Shell

Specs vs competitors

Favorite On Favorite Off
MaterialSynthetic100% NYLON
Product Weight1.26 kg0.35 kg
Outer Material TypeSyntheticSynthetic
Jacket TypeSoftshellinsulated synthetic
Kind Of JacketSoft ShellInsulated synthetic
Key AttributesStretch, Thermal, Waterproof, WindproofReflective accents, Stretch, Thermal, Windproof
Primary TechnologySorona® AuraPrimaloft® Silver Insulation Active
Key TechnologySorona® AuraPrimaloft® Silver Insulation Active 60 g
Fabric TypeSoftshellWoven
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