My weight has fluctuated over the years. Along with the wobbles, new holes were drilled into my straps. My belts got to the point where they looked like they were targets on a gun range. And to make matters worse, in most cases the new holes were "simply" pried out. Making micro-adjustments on the go is easy. A little tight when I sit down, just a light touch on the strap loosens it just right. My only complaint would be the directions. I went and bought REALLY THICK GLASSES to read! I don't understand why companies don't also publish guides in PDF format that I can download and expand on as needed.