The Gregory Nano 20 backpack is designed with a perforated 3D foam back panel that improves air circulation for real comfort in hot weather. Practical for everyday use, as well as for short half-day hikes, it has a volume of 20 liters, enough to carry just the essentials, without overloading yourself. It has a lap belt that allows the load to be distributed over the hips and pelvis rather than the shoulders. Features: Material: 210D Honeycomb NylonLining: 135D High Density PolyesterBreathable perforated shoulder strapsPerforated 3D foam back panelChest strapRemovable waist beltFront stretch pocket with buckle closure2 expandable side pocketsFront zippered pocket with organization system and key ringCompatible with hydration systemDimensions: 50.8 x 21.6 x 25.4 cmMaximum weight: 9.1 kgVolume: 20 litersWeight: 500 g. Backpack Gregory ---Nano 20 Obsidian Black