When we discovered Surf to Summit in the early 2010s, this brand quickly became our number one product line. Surf to Summit Seats continue to set the standard in the industry. This has to do with the quality that goes into their construction. No other line of seats that we know of offers the firm back support as S2S seats, thanks to the solid PVC plastic backing on their seat backs. Secondly, these kayak seats are made with compression molded foam that is molded at 400 °F and 60 tons of pressure. The making process involves pressing a polyethylene plastic sheet between a molded EVA foam face and a high-density fabric/foam laminate backing. The GTS series of kayak seats: the GTS Expedition, GTS Pro, GTS Elite and GTS Sport, continue to impress us as the best kayak seats on the market. We say: Buy Surf to Summit Seats! You may pay a little extra, but you get what you pay for.