Yes. It’s quite incredibly well designed and built. I’m honestly thinking of modifying it to add a water bottle holder or two, and a picket. Osprey makes one that’s basically exactly what I want, 18L, one water bottle pocket, one extra pocket for small stuff, but it’s shoulder straps are not nearly as comfortable to carry. They LOOK more comfortable and better designed, but they’re not. Hmm.. now that I think about it, maybe I’ll get the Osprey and see if I can swap the straps out.. Here are the two bags: Sea To Summit 20L Ultra Sil Daypack Osprey 18L Daypack