The new, ultralight Arete™ 18 hike pack is ready for quick burst adventures and long-lasting 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. Lightweight and breathable materials: Designed for all-day comfort 3D Vent Mesh Harness: Lightweight and breathable with added cargo Laptop Sleeve: Keep your laptop protected Secure Phone Pocket: Conveniently located with a zipper closure for secured quick access Side Stretch Pocket: Expands for extra water bottle or essentials Adjustable Sternum Strap: Offers a range of adjustments for a custom fit and increased stability