This 35L unisex hiking backpack is constructed from easy maintainable durable polyester with premium Ykk zippers and buckles. It has a double zipper main compartment for a 15.6 inch laptop and water bladder storage, multi pocket design for small items, breathable sponge padded shoulder straps and back panel, plus a detachable adjustable waist belt. Equipped with a whistle chest clip for weight dispersion, it fits various outdoor activities and is a great gift for outdoor enthusiasts.