Spondylolysis is the defect between joints of vertebrae and characterized by pain. Main cause of Spondylolysis is stress or constant over stretching of spine. This defect can lead to stress fractures (breaks) in the vertebrae that can weaken the bones so much that one slips out of place, a condition called spondylolisthesis. Treatment of Spondylolysis includes medication, physical therapy, exercise or collar and back supports may be used. Therapies will help to increase pain-free movement, improve flexibility and muscle strength. Made from malleable soft plastic, perforation provides ventilation, adjustable height with fasteners for easy adjustment. It can be used as preventive care of neck during work, travel, watching TV or reading. Flamingo Hard Collar(height adjustable) gives you a great relief.