The Microlight Down Vest keeps the platform's 700 fill power hydrophobic down and zoned baffle construction, but drops the sleeves entirely so the arms stay free for real work in the cold. A Pertex(R) Quantum shell woven with NetPlus(R) fishing-net yarn keeps the whole piece light enough to live in a pack, at the lightest weight of the Microlight family. Zipped hand pockets and a packaway pocket with a clip-in loop round it out as a piece built to layer under a shell or over a base layer without adding bulk to the arms. What Our Gearhead(R) Experts Are Saying:"I wore this while setting up camp in the cold and never felt boxed in reaching overhead or working with my hands. My core stayed warm the whole time, and a jacket would have just been in the way."