True to its name, the Uber Light range provides lightweight warmth without the bulk. This jacket can be worn on its own, or as a mid layer, and its lightweight nylon outer has a water repellent (WR) finish that helps repel moisture.650 loft duck down balances compressibility and warmth with ease, and elastic binding on the hem and cuffs trap heat to help keep you warm. This product contains RDS down certified by CU 1210688. The Responsible Down Standard (RDS) (independently) certifies down and feathers against animal welfare requirements and tracks it from farm to final product. All Macpac down is independently certified to the RDS. A 'just in case' down jacket that's light and packable. Perfect for layering when cold weather strikes.