Denier rankings are specifically associated with a down jacket’s longevity. Down jackets with low D rankings are typically way more susceptible to tearing, seam splitting, and vulnerable to faster common burnout. Plus the zippers tended to catch to the nearby fabric, equally as they may on a improperly designed tent. https://israelbhecw.blazingblog.com/28292507/not-known-facts-about-long-length-vest