This version is perfect for Basketball coaches to diagram plays during the game or drills during practices. * Dimensions: 17" long x 12" high x 2-1/8" deep (open); 3-1/8" long x 12" high x 2-1/8" deep (retracted) * Each Zipboard comes with 1 Beltclip, 2 Strap Hooks, 1 Dry Erase Marker, and 1 Dry Erase Eraser. Shoulder strap not included. * See also our other versions of Zipboard ideally suited for Basketball, Football, Soccer, Volleyball, Lacrosse, Hockey, and plain whiteboard