I am still using the baby sling.
It's great help when baby want to be nursed in public.
Last Saturday, I took my babies to Baptism in church. In the middle of the mass, my little baby felt hungry and cried. I just took her to the exit and nurse her in the sling.
Great relief. But I dont' know how long we can use it.
I only use it when there is air-con since it is very hot by wrapping the baby.