Kriega says:

The R22 is the ultimate versatile mid-size pack offering 18 litres of waterproof storage in addition to a 4 litre quick access front pocket. Long-term durability comes from a 420D Cordura® and Nylon Ripstop construction, all built on Kriega's groundbreaking Quadloc-Lite™ fully adjustable harness. The feature-rich R22 has the perfect mix of style and functionality, instantly recognisable as an iconic backpack by all-weather riders.