Running errands is a breeze with the Cotapaxi Chasqui 13L Sling Pack. This large sling pack is what we throw over a shoulder before a full day on our feet running between classes or going from shop to shop. The sling design makes for easy on/off with the bag so we can quickly go about our day. The bag is lightweight and includes a side access zipper so we can get to our stuff without taking our bag off.