Simple to understand Move the seat belt through the gap, then use the product normally. Toddlers can no longer stop wearing seat belts. The seat belt is held away from the toddler's neck and face. Allows them to feel more relaxed and healthy while driving while wearing their seat belts. Stuff is soft and easy. One size suits all, and it can be used on any seat belt in any vehicle. Washable from top to bottom. Double-check that the seat belt is securely fastened. Be sure the shortener is in a safe and pain-free spot for the toddler.