Pamlico and Westshore are 100% polypropylene with built in maximum UV resistance, sewn with mono filament thread in a unique channel construction that allows moisture to seep through and to evaporate. These two rugs are for extended outdoor use and are fully reversible. Made in Mexico. Dunes Club has the addition of jute which lends a natural woven look to the hard wearing polypropylene knitted construction, making it suitable for covered decks and porches. Fully reversible with channel construction allowing moisture to flow through the rug. Made in Mexico..