I love my Moby Wrap! There is no comparison to a sling or a something with lots of straps- I've tried them all. Basically it is a piece of Jersey cotton, about 8 feet long. It comes with an instruction booklet on how to tie (super easy, super quick) and you can hold your baby in many different positions. And it can hold a big kid too- like 40 pound big kid. I love it, love it, love it.Hands free and it doesn't pull on your back or shoulders.