Perfect, ultra-lightweight ticket to the moon backpack, fits a lot. Ideal for everyday use, but also for traveling, as it folds into a very small package. It washes and dries very easily. Comes in many colors.

My only issues are that:
1. It only has two compartments, a side zipper slit and a very small pouch (where it folds into), so it's somewhat difficult for me to find my things,
and
2. With daily use in the sun, the color of the backpacks fades/bleaches quite a bit.

Pay attention to how you pack larger items inside (e.g. water bottle), as they may cause discomfort on the back, as the bag is made of thin fabric without any reinforcement/support.

I have bought 2 in the past, one as a gift, and after 6 years they are still going strong, aside from the color and the fact that one tore from transporting a sharp object (don't do it) and was patched up for temporary use (so we got a new one for "good").