I made the Amy Butler Birdie Sling for my Mother -in-law, she chose the colors and fabric, fantastic Amy Butler choice don't you think?
I enjoyed using this pattern, it took some time but the finished product is well worth it, the bag is lined and has fusible fleece inside so it has a nice weight to it. The strap is one piece so it fits nicely on your shoulder and you don't have that one pesky strap that always falls off to deal with.
For those of you who are not familiar with Amy Butler and her products I would encourage you to check out her web site, its full of sewing inspiration. http://www.amybutlerdesigns.com/