What Our Gearhead(R) Experts Are Saying:"I brought this on a fastpacking trip where I was constantly shifting between hard climbs and easy flats, and the sheet insulation breathes noticeably better than a traditional down jacket during those pace changes. It stashes small enough that I never think twice about tossing it in."Fastpacking means the effort never stays constant, hard climbs one moment, easy cruising the next, and gear that can't keep up with those shifts turns into dead weight fast. The Microlighter Jacket handles that variability well, using TXdown sheet insulation that breathes more readily than loose-fill down when intensity ramps up mid-trail. Recycled NetPlus fabric, spun from reclaimed fishing nets, keeps the shell durable without adding unnecessary weight, and fully articulated sleeves move freely through scrambles and long trekking pole strides alike. A drawcord hem seals in warmth at rest stops, and the whole jacket stuffs into its own storage pocket for the stretches when it's not needed at all.