My body weight tends to fluctuate from full to full so I like "infinitely adjustable" straps but they all tend to curve in them whether synthetic, leather or full grain leather which is my opinion should be considered a feature whenever possible, but it has always bothered me. This strap doesn't: it usually keeps the desired length, but if it slips, it's easy to tighten even while wearing. The elasticity also helps keep the waist tight. The buckle digs into my stomach a bit, but only when I'm sitting for a long time. Part quality is solid and I expect the two I have will last a very long time. So far it's been the next best thing to braces, which I hate when I wear them.