I was delivered the one where arms tuck in. I decided to keep it, so this review is more for the first stage one. Bc the arms are free to move up and down within the swaddle, my DS likes this one. He finally naps in his crib!! At night I put him in a Halo, but during the day his leg reflexes would wake him up. This swaddle helps take care of that! Easy to use and good quality. I like it much better than similar shaped swaddles from a different brand.