Responsibly made: All materials tested to be free of Lead, DEHP, PAHS8, DBP, and BBP. ABS Frame: Extremely durable and scratch resistant ABS plastic shell that protects against shock and impact. Dual handle design with soft handle wrap with secure snap button closure. Reinforced with rivets. Retractable handle is designed to perfectly blend with the micro profile of the case. Long-lasting zippers and shoulder strap: Custom-designed strong zippers that open and close smoothly. Features two heavily padded shoulder straps with non-slip pads that can be combined to form backpack straps. Removable storage pocket features 2 large zipper sections and held by screws on each corner. Metal feet and hardware, smooth wheels: Strong and high-quality metal feet and hardware designed to last. Durable and smooth-rolling wheels make this large case easy to transport. Rubber feet custom-designed to protect against scratches. Protective structure: Foam-injected interior lined with non-abrasive and durable, breathable nylex. Triple mouthpiece pouch made of padded nylex included with case. Includes 3 small fit blocks, 3 larger fit blocks, and 2 walls, all able to be moved to customize the fit of your horns.