The CD4 by Walden Surfboards, is thinner, slightly narrower with a more pulled in nose. It is a cross between a mini longboard and a traditional shortboard. The outline is a true Longboard / Shortboard hybrid design with a mildly pointed nose which gradually widens down to a pulled in diamond tail. This is Walden's most high performance shortboard and designed for the surfer with shortboard experience. This design will feel very comfortable to a Shortboarder yet it is more functional in more surf conditions than standard short boards.