Love that this uses a fairly high fill power down (800+), making it warm and space/weight efficient. I have higher fill power items like MH ghost whisperer UL (1000 FP), but most UL garments use fragile fabrics and don't have any weather protection, so they're really limited to cold, dry weather. The Helium Down Jacket has weather resistance in key areas due to the Pertex Diamond Fuse panels, which makes it more versatile. It won't be a great outer layer if you're expecting heavy rain, but I wear it by itself in a light mist or under a shell if heavy rain is expected. The Pertex panels are a little crinkly, but not as loud as some reviews suggest. I found the sizing to be accurate. This is quickly becoming a staple of my wardrobe from fall through spring. Thanks OR!
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