Built on the concept that it's easier to carry heavy loads when the backpack and wearer work as one, the Boys's ACT 90+10 Program Pack from Deuter incorporates an Aircontact Lite System that relies on the compression and expansion of hydro and thermo-phobic Aircontact foam to provide ventilation and load-carrying comfort. A continuous air channel along the spine allows warm air to escape and permits cool air to funnel between your back and the body of the pack. Unique performance features of the ACT Lite 60+10 SL pack include ice axe/trekking pole loops, top lid attachment rings, and a front elastic cord attachment for lashing gear. A Easy, stripped down version, this new ACT Lite series pack also features a full-length gear attaching back daisy chain , side compression straps, and double lid buckles for added stability.