Custom Puffer Jacket Design

I need a skilled designer to create a custom puffer jacket.

Requirements:
- Primary use: Please specify (winter sports, casual, outdoor)
- Outer shell material selection: Please specify (nylon, polyester, cotton blend)
- Insulation type choice: Please specify (down, synthetic, hybrid)

Ideal Skills and Experience:
- Expertise in outerwear design
- Knowledge of materials and insulation types
- Experience with winter clothing functionality and style

Please provide a portfolio with relevant work.