Sporty and functional, the Futura panel-loading daypacks have a mesh back that will keep you uber cool.  They have lots of outside pockets, a padded hip belt, hiking pole attachment loops, rain cover, and hydration system compatibility.  There is also a handy organizer pocket in the outside panel for pens, phones and keys.

Weight: 1330 g
Volume: 27 litres
Size: 55 x 28 x 20 cm

Deuter Aircomfort System:  With a taut mesh back supported by a flexible spring steel frame this system has been tested as the most ventilated harness you can get on the market.