What is the pinch test? 👌 🧡 The Pinch Test is a method for ensuring that your little one’s car seat harness is safely secured to them. By pinching the harness right by their shoulder, you can check to see if there’s excess webbing. If there is, you need to tighten the harness more until you can’t pinch any excess. Why is it important? A loose harness can allow your child to shift position or even be ejected from their seat in the event of an accident. A properly fitted harness is crucial for p