a portable , fold - over fence panel for delineating athletic fields and controlling crowds includes a frame having a pair of vertical members and a pair of horizontal members ; a panel of flexible material supported by the frame ; first and second springs removably connected to the vertical members , each of said springs having a mounting spike integrally formed therewith for insertion into a soft , outdoor surface ; first and second tubular feet interchangeable with said springs and suitable for supporting the frame on a hard surface ; and wherein said springs allow the frame to fold over upon impact .