The XPR Rucksack consists of two main compartments, divided by a zip. It then has three additional side compartments for storing accessories. It also features a vinyl base giving it added durability and making it waterproof. Size: 45 x 50 x 27cm Volumes: Main Compartment: 32.8 litres Top Compartment: 6.2 litres Side Compartments: 2.4 litres each Front Compartment: 6.7 litres Overall: 50.5 litres