It’s simple. Insulated layers are the smartest, easiest way to protect yourself from frigid temps and cutting wind. So when Proof designed their newest lineup, they set out to expand insulation’s horizons. Introducing: The Stealth Down Collection. Using classic down in seamless, stretch fabric with a DWR finish—they encase you in your own bubble of warmth invincible to the breeze. And rather than opting for loud materials in reflective fabrics, they took a more minimalist design approach—delivering a clean, subtle puffer jacket that doesn't blow your cover.