Durable nylon black Adidas Boston bag with a mesh design. 2-way with a backpack. - Brand: Adidas - Color: Black - Type: Boston bag - Material: Nylon - Design: Mesh sections Thank you for viewing. My son used it 3 times for a school event. It has not been cleaned, so there is some dirt, but it has been used only a few times, so there are few scratches or signs of wear. For those who need a large backpack for school trips or club activities. Probably 35 liters.