This chair works perfectly on our sailboat, as a Skipper's chair for steering the tiller! Holds us nice and tight on rubber matting on top of the cockpit seating so we can see over the cabin and relax comfortably! Its seat area is nice and wide as well as having a weight bearing of up to 250 lbs, which is more than most beach chairs. My husband and I are both between 200-220 lbs.  These chairs hold us strongly and comfortably with no sagging!!