1. Flex Grip, swivel shoulder strap
2. Zipper top the "circle-in-the-square" shape buries the bell rim. Plus there is NO zipper along the valve line
3. Lead pipe nestled in quilted foam
4. Compartment big enough for several mutes and method books, with a small velcro pocket inside for mouthpieces and valve oil
5. Backpack straps (not shown) on back
6. Circular drawstring protector tightens around the bell.