I was given one and I use it every shopping trip. Like others I just leave it in my car. When he was younger I just laid a wrap over the red seat but now he is in the main seat I wouldn't be without my cover. DS also likes to chew everything so at least I know he is only chewing on fabric which I can easily wash

Eta on the sling I have an ergo and a ring sling which I have tried whilst shopping but I find it hurts my back too much having to lean over into the trolley when he is on me particularly when it comes time to put the groceries through the checkout. And he now much prefers being able to sit up and look around at everything.