Hotslings Reversible

How long did you wear your baby?
I am not a baby wearing momma, but i was curious as to how long baby wearing mommas have worn there babies?
http://www.hotslings.com/baby_slings/reversible_collection/reversible_pink_eye_candy This was the link that caught my attention, it just does not seem comfortable.
They won’t post my question!
I have a similar sling, and I absolutely loved it.
Jacob is too big to have lying down in it (we got it when he was 1 month old, he’s 7 months now) but I still use it for trips into the grocer, since he cant sit on my hip.
It takes a lot of the strain off my hip and back, but, I can not have him in there for longer than half an hour at his age.
When he was little I kept him in there all day some days!!
It was very comfortable for me.
How to use a baby sling: Tummy to tummy – inward facing