KAVU Switch Slinger Rope Pack Crossbody Rucksack-Black Great preowned condition Unisex bag All zippers in good working condition The Switch Slinger is an awesome rucksack that has a double sided buckle system, so you can clip our Classic Rope the left or right side. Plus - when one of the buckles isn't in use, it neatly tucks into the bag and out of your way!