Whether you are reading JTT or shopping for gear, you’ve probably seen the word “denier” as it pertains to fabric, especially nylon. If you haven’t seen the word denier, you may have seen the shorthand for it which is a letter “D” appended to a number like 1000D or 500D.
If you have ever wondered what that means, Mission Spec can help. They just released a video that tells you what denier is and explains some of how it affects the attributes of the fabric.
It’s 9000m because a silk cocoon contains roughly 9000m and is 1 denier.