The best description is a youtube video for the 20L version. It is a perfect pack for fastpacking, and UL backpacking.

YouTube video

It is exactly the same design. I’ve posted pix here. I have not used the pack outside; only to fill it in-house to see how it fit. I cannot return it, as I purchased it directly from the EU, and returning it is just too convoluted, and time consuming. The price includes shipping to CONUS. If you live within a reasonable drive from Walpole NH, I will deliver it. (No discount re high price of gas.)

I have also attached pix from the website for the 20L, as they give you better views.