1. Core Materials & Thermal Principles

• Fill: Primarily white goose/duck down (70%-95% down content). Fill Power (FP) is the key metric:

  • 500-600 FP: Basic warmth (-5°C to 0°C)

  • 700-800 FP: Mid-high performance (-15°C to -5°C)

  • 800+ FP: Expedition-grade (-30°C and below)
    Budget options often blend down with feathers for reduced cost and warmth.

• Shell:

  • Premium: High-density nylon/polyester (wind/water/down-proof, e.g., Canada Goose's Arctic Tech)

  • Budget: Standard polyester with basic weather resistance

• How It Works: Down clusters trap air to create efficient insulation that minimizes body heat loss.

2. Styles & Use Cases

• By Length:

  • Short (<60cm): Urban commuting, light outdoor, layering (e.g., Moncler short styles)

  • Mid-length (60-80cm): Covers waist/hips for northern cities (e.g., Moose Knuckles Model 07)

  • Long (>80cm): Extreme cold (e.g., Canada Goose Expedition Parka)

• By Function:

  • Urban Fashion: Clean cuts + luxury details (e.g., Moncler glossy finishes)

  • Technical Outdoor: Extreme warmth + weather protection (e.g., Canada Goose, Moose Knuckles)

  • Lightweight: Minimalist insulation for mild winters (e.g., Uniqlo Ultra Light Down)

• By Design:

  • Stand Collar: Streamlined silhouette for daily wear

  • Fur-Trim Hood: Fox/wolf fur for luxury and warmth (e.g., Moose Knuckles fox trim)

  • Utility Style: Multi-pocket + functional design (e.g., Canada Goose Chilliwack)

3. Brands & Market Segments

• Luxury Tier: Canada Goose, Moose Knuckles, Moncler – expedition-grade + brand prestige

• Premium Tier: The North Face, Arc'teryx – balanced performance & style

• Value Tier: Uniqlo, Bosideng – cost-effective solutions 

4. Care & Maintenance

• Washing: Dry clean or gentle machine wash with down-specific detergent; air dry away from sun

• Storage: Hang or fold in dry conditions (avoid compression to maintain loft)

• Down Leakage: Premium jackets use baffle construction + tight weave shells; minimal leakage in budget models is normal