Thanks to Angela for this Frugal Baby Tip!
The trick I found to using a sling without padding is to spread the shoulder area out over the point of your shoulder... instead of letting it sit on your shoulder (where your bra strap would be). This makes it incredibly comfortable, as opposed to letting the shoulder part dig into the top of your shoulder :) I had almost given up on my sling until I lucked onto this tip.
BTW, I made a the sling I'm using.
Category: Mom Clothing