Properties: Capacity: 55l Dimensions: 59 x 39 x 24 cm Weight: 2.3 kg Ventilation system Back adjustment system Space for a helmet Spacious main compartment Molle® System H2O System Side pockets with zippers Flap pocket Rain cover Space for shoes Removable hip belt Possibility to attach poles Reflective elements Chest strap with whistle Technical specifications: Material composition: 100% polyester;Properties: Capacity: 55l Dimensions: 59 x 39 x 24 cm Weight: 2.3 kg Ventilation system Back adjustment system Space for a helmet Spacious main compartment Molle® System H2O System Zippered side pockets Flap pocket Rain cover Space for shoes Removable hip belt Possibility to attach poles Reflective elements Chest strap with whistle Technical specifications: Material composition: 100% polyester;MAGNUM BACKPACK CAPACITY: 55 L SIZE: 59 x 39 x 24 cm WEIGHT: 2.3 kg MATERIAL COMPOSITION: OUTER MATERIAL: NYLON INTERNAL MATERIAL: POLYESTER SPECIFICATION: CONFIGURED BACK SUPPORT SYSTEM BACK HEIGHT ADJUSTMENT AIRDUCT SYSTEM RAIN COVER CORDURA ORGANIZER MODULAR SYSTEM FOR MOUNTING POCKETS AND MAGNETS Helmet Holder H2O OUTPUT WHISTLE;MAGNUM BACKPACK CAPACITY: 85 L DIMENSIONS: 75 x 34 x 26 cm WEIGHT: 3 kg MATERIAL COMPOSITION: 100% POLYESTER SPECIFICATION: - CARRYING SYSTEM - VENTILATION SYSTEM - CONFIGURED BACK - RAIN COVER - H2O OUTPUT - MOLLE SYSTEM - SHOE COMPARTMENT - WHISTLE - HELMET HOLDER - ORGANIZER - YKK SNAPPING BUCKLE