The Atlas Daysack was originally designed for a NATO army operating in conditions. It is lightweight but hard-wearing, made from 500 denier high tenacity PU-coated nylon fabric which has inherent waterproof and FR capabilities. The Atlas has everything you could need for a 12 hour patrol: 30 litres of volume, internal hydration pouch, waterproof cover, beavertail pouch, an internal document pocket and side mesh pouches.