Years ago I saw a nice sling carrier that I liked, but I can't remember what it was called!

It was one shoulder, one piece of stretchy fabric in a loop. You wore it over shoulder to opposite hip, and slip bub into the fold.

Are there any wraps like this? I'd love something really simple, for around the house, and easy to take off if bubs falls asleep. And it would be great if the sling can be used as a hip/back piggyback carry for my toddler, but not essential.

Thanks for any help!