Reliable synthetic lightweight packable jacket for alpine weather

The Mountain Equipment Superflux Jacket combines 100% recycled POLARLOFT® Featherless insulation with a DRILITE® LOFT 40D windproof outer fabric to deliver dependable insulation in mixed mountain conditions. Designed for mountaineers, hillwalkers and backpackers, it maintains warmth in damp weather where traditional down can lose performance. No verified temperature rating was supplied, but the jacket is built for cold-weather use across UK hills, Alpine objectives and remote backpacking trips.

Performance & Engineering

• POLARLOFT® Featherless Insulation: Engineered with 246g (Size 12) of POLARLOFT® Featherless insulation by 3M®, combining down-like softness with improved moisture resistance for cold, damp mountain environments.

• Weather-Resistant Shell Fabric: Built with DRILITE® LOFT 40D outer fabric and a fluorocarbon-free DWR treatment to provide complete windproof protection and high water resistance during exposed ridgeline travel and unsettled weather.

• Layering-Friendly Mountain Fit: Designed with a mountain fit, articulated sleeves and pre-shaped construction to maintain mobility while accommodating additional layers beneath in winter conditions.

• Packable Mountain Utility: Packs into one hand pocket and includes twin karabiner carry loops, allowing easy stowage in a rucksack or attachment to a climbing harness when carrying emergency insulation.

• Efficient Heat Retention: Utilises a 2-way YKK® moulded front zip, insulated rear baffle, elasticated cuffs and dual hem drawcords to reduce heat loss and seal out wind during prolonged exposure.

Technical Specifications

• Ideal For: Mountaineering
• Main Fabric: DRILITE® LOFT 40D outer fabric with fluorocarbon-free DWR; 100% recycled 20D lining fabric; 246g (Size 12) POLARLOFT® Featherless insulation by 3M® (80% recycled polyester, 20% virgin polyester)
• Weight: 550g / 1 lb 3.4 oz
• Hardware: 2-way YKK® moulded centre front zip; YKK® zipped handwarmer pockets
• Pockets / Features: 2 zipped handwarmer pockets, single internal security pocket, adjustable insulated hood, packs into hand pocket, twin karabiner carry loops, articulated sleeves, dual hem drawcords, stitched-through construction
• Fit: Mountain fit

Care & Longevity

Machine wash at 30°C using liquid detergent or a specialist cleaner, then tumble dry on a cool setting to restore loft and insulation performance. Store in a cool, dry place away from direct sunlight. Avoid harsh detergents and follow the manufacturer's care guidance to maintain the DWR treatment and long-term performance.