Lithium is , as some had guessed, our new name for the shelters made with DCF (Dyneema Cuben Fiber)
Henry had been playing around with that material for a while as well as he has with other fabrics .
He choose the .51 version for the Notch Li.
There are some changes on the design, they will be incorporated into the Sil version too.
The new Sil starts to ship out this week.
The fly doors don't have a zip but overlap and the struts are easier to remove .
This is the sil version :

- notch2018fly_1.jpg (148.08 KiB) Viewed 17917 times
I don't have the weight difference as yet because the prototypes often have a different weight from the production versions.
BTW, still all made in Seattle. (apart from the prototypes...)