You want a daypack, need a laptop backpack and a hydration pack. Three different Crumplers is one option. The three-in-one Yee Ross is the other. The flexible and compact Yee Ross holds a 4-litre hydration bladder or 13" laptop in a rear sleeve, your tunes in a centre zippered pocket, and your stuff-du-jour in a 13-litre general cargo space at the front. It also has dual external zippered side pockets for those things you want to keep close at hand.
The rear of the bag and underside of the harness both feature Air Mesh padding.
“Very positive, very helpful online help.”
“Your products are a bit expensive but great range.”
“Rushfaster did a great job of delivering exactly as expected. I got the bag i wanted for the same price in australian dollars as was on offer in us dollars without the big shipping charge or the risk of getting hit with extra customs costs.”
“Ordering with rushfaster was really great, it was quick and easy and delivery was fast.”
“Most impressed with ease of site and best of all you lived up to your name - i received item really quick...... However the guy i work with who put me onto you said he get m&ms and stickers in his parcels :(.”