My family and I have been avid users and supporters of Britax Car seats over the last few years, between parents and grandparents have seven different models, and with the guidance of such review sites found them to be excellent in every respect. However following the purchase of our most recent Evolva 1-2-3 I feel compelled to share a recent experience which has left me speechless. On a recent journey with our 2 ½ year old daughter we discovered that she was unclipped and free in the back of our car (terrifying when only the car seat door has a child lock on). Thinking I must have been distracted and forgotten to clip the belt correctly at the beginning of our journey I immediately stopped and proceed to clip her back into the car seat. As we moved off my husband turned to speak to my daughter only to catch her unclipping the belts herself. This has never happened on any other car seat and is directly attributable to the redesign of the clipping mechanism. Instead of the clip being at the front or sides, where an infant is unable to apply any great force, they have moved all of there recent clips to the top. This position provides an infant with the ideal maximum leverage (they simply need to lean against it) and clearly allows a 2 ½ girl to unclip herself at will. Of even greater concern is my experience with the Britax customer care, who told me that any clip mechanism cannot be 100% childproof (agreed, but this is a new seat that my daughter has learnt to unclip in a matter of days) and that the location of the mechanism is unrelated (wrong, they cannot physically unclip front or side clips at this age). They even went so far as to say that I should consider providing ?better entertainment? for my daughter so as to distract her from unclipping the belt. This is simply unacceptable and, if like all parents, you care for the safety of your children, I would suggest you consider very carefully before selecting a new Britax on historic reputation, as the latest designs have a potentially lethal flaw.