Size: 21.6\'\'x12.6\'\'x7.9\'\'(H x L x W) Capacity: 40L,can be put a lot of things such as laptop,books,clothes and so on. High quality:Made of lightweight and water resistant oxford fabric with durability & comfort . Wide and soft shoulder straps help you relieve the stress from your shoulder. Multi-pockets design will satisfy your needs at maximum,convenient to take more stuff. Mutipurpose: outdoor hiking, trekking ,travel, camping ,day trips,school.