The present invention provides a flexible door for use in enclosing a protected area, thus limiting ingress or egress. The invention includes a tracking system for accommodating the door from above and below and has both top and bottom portions. Also a bendable portion that is engageable with both the top and bottom portions of the tracking system is provided. Further, mesh faces can be attached to the bendable portions for the door and can be engageable with the strip-like portions.