1848 Mont Fort Summit Women’s Technical Ski Jacket

The Mont Fort Summit is engineered not merely for resort aesthetics but for structural reliability under alpine load conditions. Its construction philosophy reflects Swiss mechanical discipline rather than seasonal fashion cycles.

Material selection prioritises durability curves, tensile stability, and long term performance retention. Production is limited and quality controlled to preserve technical integrity and brand exclusivity.

Technical Construction Overview

The Mont Fort Summit is constructed as a 3-layer laminated alpine shell system with zoned thermal integration, engineered for high altitude environments exceeding 3,000 metres where wind load, hydrostatic pressure, and thermal flux variability demand structural stability.

Shell System Architecture

Layer 1 – Exterior Face Fabric

Composition

• 88% High tenacity Polyamide 6.6

• 12% Elastane

Fabric Weight

• 178 g/m² ± 5%

Construction Type

• High-density woven face fabric

• 4 way bi axial stretch

• Abrasion resistant filament structure

Surface Treatment

• Fluorocarbon-free (C0) DWR

• Water repellency tested to ISO 4920 Spray Rating ≥ Grade 4

Abrasion Resistance

• ≥ 40,000 cycles under ISO 12947 (Martindale method)

Polyamide 6.6 is selected for superior tensile strength, fatigue resistance, and low temperature structural stability compared to standard polyester shells.

Layer 2 – Performance Membrane

Membrane Type

• Monolithic hydrophilic polyurethane membrane, pressure-laminated to the exterior shell.

Hydrostatic Head Performance

• ≥ 20,000 mm minimum

• Tested in accordance with ISO 811

• Confirmed under AATCC 127 hydrostatic pressure method

Dynamic Flex Resistance

• ISO 7854 dynamic flex test compliant

The membrane utilises molecular diffusion to transport vapour while maintaining resistance to liquid water penetration under sustained pressure.

Layer 3 – Interior Backer

Composition

• 100% Warp knit polyester tricot

• 60 g/m² moisture dispersive lining

Function

• Protects membrane integrity

• Enhances moisture wicking

• Reduces internal condensation pooling

Breathability and Moisture Management

Moisture Vapour Transmission Rate (MVTR)

• ≥ 20,000 g/m²/24h

• Tested under ISO 15496

• ASTM E96 Procedure B compliant

Air Permeability

• < 5 L/m²/s under ISO 9237

The system is calibrated to evacuate vapour during high metabolic exertion while limiting convective heat loss in exposed alpine conditions.

Thermal Insulation Engineering

Insulation Composition

• 100% Recycled Polyester Microfilament

• 80 g/m² core thermal zone

• 60 g/m² lateral mobility zones

Thermal Resistance

• Approximate 0.8–0.9 CLO equivalent in core zone

• Tested under ASTM F1868 thermal manikin method

Compression Recovery

• ≥ 95% loft recovery after 5,000 compression cycles

Microfilament insulation provides hydrophobic resilience and structural consistency in sub zero humidity.

Seam and Structural Integrity

Seam Construction

• Double needle lockstitch

• Reinforced bar tack stress points

• Fully seam-taped using 13 mm PU thermal bonding tape.

Seam Sealing

• 13 mm PU seam tape

• Thermally bonded

• ISO 13935 seam strength compliant

Seam Strength

• ≥ 450 N tensile resistance

Zipper and Closure Engineering

• YKK AquaGuard VISLON laminated waterproof zippers

• Corrosion resistant metal components

• 10,000 cycle durability rating

Ergonomic Performance

Articulation Geometry

• Pre curved sleeve construction

• Shoulder rotation allowance 25° beyond neutral stance

Stretch Recovery Rate

• Stretch recovery ≥ 90% after cyclic elongation testing

Wind Resistance

• Windproof classification under ISO 9237

Environmental & Compliance Standards

• OEKO TEX Standard 100 certified textiles

• REACH compliant chemical composition

• Fluorocarbon free DWR treatment

• PFC free water repellency

Performance Summary Matrix