We bought the Evenflo Chase booster seat as my son has just outgrown his current evenflo convertible carseat. I was greatly dismayed when I got home and got it all out of the packaging to notice that it had the strap to loosen and tighten the fit of the straps with the buckle adjuster right at the child's chest on the right hand side. We tried one of these in my mother-in-law's car and my son hated it...the buckle wouldn't tighten to get a tight fit and was a hassle when we were trying to get him to have a safe and tight fit in the booster seat. The buckle actually poked him in the base o his neck. The current seat we have has an adjustable button at the base of the carseat that you just have to push in the button and pull the straps near the child's chest, and it loosens. If you want to tighten the straps, you just pull on the strap at the base of the carseat and you are able to ratchet it to be tight on the child. needless to say, we returned the carseat before even installing it.
Saint Cloud, MN