What Our Gearhead(R) Experts Are Saying:"The Filson Ultralight Jacket is the one I throw in my bag on any trip where the weather is uncertain. The PrimaLoft Gold insulation holds its warmth even when the jacket gets wet, and the microsuede-lined collar and hand pockets are a small detail that makes a real difference in comfort on cold days. It packs down small enough that there's no reason not to bring it."Filson's Ultralight Jacket is built around 60g PrimaLoft Gold insulation - a synthetic fill that retains warmth even when wet, making it a reliable choice for the kind of variable weather that tends to show up without warning. The 1. 5-ounce ripstop nylon shell keeps the overall weight low while holding up to the kind of daily use a jacket this versatile will see, and the elastic cuff and waist closures keep warm air in when the temperature drops. The microsuede lining in the hand pockets and collar stand adds a layer of comfort that goes beyond what most insulated jackets bother with, and the interior zippered security pocket keeps valuables close. It packs down small enough to live in a bag or a car indefinitely - the jacket that's always there when a warmer layer is needed.