Nice bolsters. Seems durable enough. Similar to other cushions. Flexible to adapt to some curvature. Mounting can be tricky in an open area but easily solved with buying additional stainless flat brackets to hold the clips themselves where you need them to position bolsters. Also bend the clips down toward flat brackets to increase retention of the pad to improve fit. Works great. Maybe a bit overpriced in my mind but custom units would be more. Is 1 unit per purchase.