The
QuadShock backpack straps provide the ability to balance the weight of
your disc golf bag over your hips instead of off to one side of your
body. When the weight of your bag is over one shoulder and off of the
hip, the spine needs to compensate. This compensation leads to an
unnatural lateral curve of the spine. When the weight of the bag is
balanced over the hips, it allows the spine to hold its natural,
straight and aligned shape.
Phenix Backstraps 
