Fabric:

• AscentShell™ 3L
• 100% nylon 20D ripstop with 100% polyester backer Upper: AscentShell™ 3L
• 100% nylon 70D plain weave with 100% polyester backer

So this jacket is sized rather strangely.  It’s arm length is good, but it’s even tighter than the Nano-Air around the gut.  It’s an XL, but every other XL I own is far larger.  If this wasn’t 75% off, I would return it.  I’ll just see if I can lose a few pounds to fit in it better.