Mammut Creon Light 45:

Chimney ventilation up the back plus adjustable torso length ices the deal here.  Mammut’s big mountain insights create a well-balanced load-and-carry system for going fast, high and strong over three days (or more).  Mammut’s attention to detail translates into stay-put strap and suspension tuning.  Creon readily adapts to both men and women; internal and external pockets streamline pack organization and access.  The brand’s stellar line-up of first ascent athletes contributes to the DNA of this mammoth-embroidered piece.