The Delta Series includes the most progressive shapes DoubleUP has to offer. The Delta is home to many of the DoubleUP Team Riders and the graphics capture the maze like feeling you get while riding on DoubleUP's testing waters. The cartoon depicted by Lee Eschliman also captures many characters of the Team. The Delta series shared features include: matte finished "PBT" bottom, curved flow channels, canted and concaved footbeds, reduced tip and tail profile, continuous rocker.