I just want to rave a bit about the Ergo Baby Carrier!
I bought one last week because my chunky monkey of a son is now 22 lbs and wiggly - and won't stay in the sling comfortably! We were using an unpadded Maya (which I loved) and he'd arch his back when cranky - and potentially slide out the bottom, you know - and he's all into diving and grabbing things, which made for some spectaciular saves, lol.
So, time for something new. I wanted to still carry him, however, and found the Ergo! I have to rave that I really like it! And would highly recommend it for chunky babe's and older babies/toddlers. And no, I don't sell them, lol!
I got mine for $85 online.
My son has taken about four 3 - 5 hour rides in it so far and we have both been comfortable walking around the mall, going to festivals etc.
It's been a lifesaver - I like to encourage all slinging mamas and those inclined to hold their babies to continue to do so, and this product is helping me.
So, there you go. Try an Ergo when your babe outgrows the slings you have and keep carrying him or her