Back saver!
4/5
I'm not good with straps and what not, but pretty easy to use. Like the seat cushion a lot!
Musilia's backpack system (MBP) can reduce the stress on the shoulder by transferring most of the weight to the waist, thanks to the adjustable strap system inspired by hiking backpacks. The Comfort-System is the perfect solution for long distance cello trekking. Moreover it is really easy to install and takes only 2 minutes to have it fitted on your case.
Assembly instructions: Musilia MBP Comfort-System