The Abs Sit Up and Crunch Trainer is designed to provide support for your head and neck during core muscle exercises. It will help you achieve proper alignment of your head, neck and shoulders, making exercises such as crunches more comfortable to perform. Reduces stress and strain on neck muscles and allows for correct breathing while exercising. Makes each sit-up and crunch as effective as possible. Designed to provide support for your head and neck during core muscle exercises Helps you achieve proper alignment of your head, neck and shoulders Reduces stress and strain on neck muscles Allows for correct breathing while exercising Makes each sit-up and crunch as effective as possible Shipping Weight: 3 lbs