Your shoulder straps aren't the problem
If your shoulder straps are digging in, the real fix is to stop carrying the weight on your shoulders.
That’s what the hip belt is for. A properly adjusted hip belt transfers most of the load to your pelvis, where your body is built to handle it. So if you’ve got a hip belt, put it on, tighten it snug around your hips, and then adjust the shoulder straps so they just rest on your shoulders without bearing the
