Features:- -Freefloat Suspension - ventilated, suspended mesh backpanel featuring gregory&';s freefloat dynamic comfortcradle lower back system for the ultimate in dynamic fit and comfort -Recycled, Ventilated Comfort - top-to-bottom ventilation and ultralight, high-tenacity, recycled fabrics match up for the ultimate mile-tackling superlight package -Polygiene Stays Fresh Technology - the ventilated backpanel has an odor control fabric treatment that inhibits the growth of odorcausing bacteria, keeping your pack fresher, longer.