SJT ENTERPRISES, INC. Keep Calm Surf On 5" x 16" Surfboard Wood Plaque Sign (SJT41325) Wooden Surfboard Sign - Keep Clam And Surf On Great for the rec room, basement, man cave OR woman cave, bedroom, dorm, bar, etc. Made of very solid laminated MDF wood fiberboard Measures 5" wide x 16" tall x 1/4" thick Perfect for tropical, coastal, Hawaiian or beach themed dcor!