With the Jumper, you literally jump in the air. What a treasure! Plenty of space for all your daily stuff, in open and zipped pockets, and can be transformed into a backpack or shoulder bag in no time.
“What I find useful is that there is also an extra zipped pocket on the outside, so that I can store my phone and/or public transport card there. Because there is a cover over the zip, I don’t have to worry about it being easily stolen when I carry it on my back. Clever thinking!”