Mountain Surf introduced kevlar, now called Aramid, to the market as well as a myriad of other design features that have become industry "standards." Our skirts are hand made in our factory with the most durable materials available including 3mil double diamond articulated neoprene decks, 4 mil aramid fiber reinforced high density neoprene gussetts, and a unique semi-circular O-ring seal. The EZ-ON fit with Gold ripcord has a high performance fit appropriate for most paddlers.