The North Face Martin Wing 10 NM61214 A 10-liter backpack for trail running. I bought it, but I haven't used it at all, so it's in pretty good condition. Looking at it again, I can see that the pockets on the waist belt have dividers, and it's designed to attach various external items, so it's well-made. It's compact and convenient for everyday use as well. Please consider it. From the following site: Product Description This is the 10-liter model of the Martin Wing, which has established itself as a standard trail running pack. It inherits the comfortable carrying experience of the original Martin Wing, developed for races, and is equipped with features that allow you to run comfortably on trails. Pockets are placed in various places, and they are zippered to prevent loss of small items. There is also a space inside for a hydration reservoir up to 2 liters. It is a suitable size for hard courses and long runs, carrying thermal clothing and emergency kits. Material: 70D ripstop nylon, 210D ripstop nylon, nylon stretch mesh Size: 37 x 19 x 12cm Weight: 440g A lightweight pack designed to prevent the main body from swaying, perfect for races and training. Stretch mesh is used on the waist for improved fit. Air mesh back for excellent breathability. Mesh window on the back to see the remaining hydration level. Dedicated compartment for hydration reservoir. Country of origin: Vietnam