JASPER 2L JKT M

3-in-1 Compatible

Flexible Layering System

Designed to combine with compatible Jack Wolfskin outer or inner garments, this feature supports adaptable layering across changing seasons and weather conditions. It allows you to adjust warmth, weather protection and comfort depending on the activity and forecast.

Good for:

• Year-round outdoor use
• Changing weather conditions
• Flexible layering

Breathability 15,000 g/m²/24h

High Breathability for Active Use

A breathability rating of 15,000 g/m²/24h means the apparel fabric can let up to 15,000 grams of moisture vapour pass through one square metre in 24 hours. In practice, it helps sweat escape more efficiently, supporting a drier and more comfortable body climate during high-output activity.

Good for:

• Fast hiking and trekking
• High-exertion outdoor activities
• Demanding weather protection layers

Test method: JIS L 1099 B-1.

Waterproof 20,000 mm

Very High Protection for Demanding Conditions

A water column rating of 20,000 mm means the material can withstand water pressure equivalent to a 20-metre-high column of water before water starts to penetrate. It indicates very high waterproof performance for heavy rain, wet snow and demanding outdoor conditions, while breathability also depends on the overall product design.

Good for:

• Heavy rain
• Wet snow
• Demanding outdoor conditions

Test method: JIS L 1092.

Windproof

Protection Against Strong Winds

Windproof construction is designed to protect against strong winds up to 8 Beaufort or around 60 km/h. It helps reduce wind chill and maintain comfort in harsh, windy conditions.

Good for:

• Strong wind
• Exposed trails
• Harsh outdoor conditions

Windproof up to 8 Bft / around 60 km/h.