The backpack version of our versatile Switchback sling-pack, this unique pro-quality day-pack has generous size to accommodate laptops in its padded retainer, yet is nimble enough to be rotated from back to chest. Common to all our slings, such as the Evac series, this maneuver gives on-the-go access to frequently used gear while carrying heavier loads on the back the rest of the time. It's also more secure in crowds etc., since you can keep it in sight and allows users to sit back in tight quarters such as ski lifts, or in vehicle interiors, etc. Common to all our slings, such as the Eva Series, This maneuver gives on-the-go access to frequently used gear while carrying heavier loads on the back The rest of the time. Common to all our slings, such as the Eva series, this maneuver gives on-the-go access to frequently used gear while carrying heavier loads on the back the rest of the time.