very sturdy, High quality Cordura20 mm high-density foam padding, all load-bearing parts extra padded and reinforcedTear-resistant and water-repellent, Waterproof zips, NPS (Neck Protection System) neck restLint-free honeycomb lining, Sewn-in protection for machine head, bridge and back area, Comfortable soft grip paddingFully lined, adjustable, firmly sewn-on luxury backpack straps, Large music pocket + smaller accessory pocket