Exercise Pen Sunscreen 4x4Exercise pen sun screen blocks 80% of sun rays & keeps your dog cool & comfortable while using the exercise pen outdoors Dog pen sun screen is UV resistant & extremely breathable promoting healthy airflow through the dog kennel Exercise pen sun screen measures approximately 4 x 4 feet (48 x 48 inches) Sun screen fits all MidWest models & other metal exercise pen brands Sun screen inludes plastic zip ties & grometts for a secure attachment to the dog