Calvin loves movement of any sort. We can roll him in the stroller, strap him in his baby bjorn, or walk the halls with him and he is content as possible. To our surprise the apartment we are staying at now has a baby swing. As soon as we saw this we made it a priority to get batteries, and sure enough he loves it. I put him in it this afternoon and 5 minutes later he was out. It also let both of us eat dinner at the same time tonight! We are so thankful for this little invention.