The Sonoro backpack by Overland Equipment is a versatile rucksack with side-access zipper opening is great for office and play.Generous main compartment with organizer pockets and separate snap closure electronics sleeve (fits up to a 15' laptop) Unique fold-top opening with quick-pull strap mechanism Waxed canvas material with suede leather bottom panel for durability Zippered front organizer compartment with multiple sleeves (one fleece lined for sunglasses or smartphone), zippered security pocket and detachable key clip Adjustable padded shoulder straps with mesh underside for breathability Removable sternum strap for load stabilization Side-access zipper opening for ease of access Padded back panel for comfort and ventilation