The new, ultralight Camelbak Arete™ 18 hike pack is ready for quick burst adventures and long-lasing journeys. Constructed with cool, compressible material, it can work solo for short hikes and be easily packed away for spur-of-the-moment adventures. This hike pack is lightweight and breathable with added cargo space, for all-day comfort. Remove the reservoir and store your 15″ laptop securely. Designed to preserve resources and diminish disposables.