Gregory Muir 24 Daypack, Obsidian 3D foam harness, flexible molded 3D foam back panel for all-day comfort Offset zipper allows for wide panel opening to main compartment Second padded compartment with pockets fits most laptops Hydration port and sleeve with gear haul loops and adjustable ice axe/trekking pole loops Waistbelt with pocket to tuck away when not in use.