The Mercury Tactical Gear 3 Day Stretch Backpack is a large pack that is tough enough for your next mission. Rugged polyester construction and a generous main compartment make this backpack a solid choice for deployment or everyday use. Pack expands up to 4.5” for larger loads. Internal mesh pocket and organization panel help keep gear organized. External compression straps keep contents secure. Adjustable sternum and waist straps help stabilize heavy loads and reduce bounce.