A baby carrier designed to be comfortable for the baby to sleep in, without putting a strain on the shoulders and lower back. - Brand: ANDROSOPHY - Model Name: Baby Carrier Inner Pad - Price: ¥34,900 - Features: Doesn't hurt shoulders or lower back, babies fall asleep quickly, simple design for couples and long-term use Thank you for viewing. I purchased this at the beginning of this year, and have used it about 10 times. I am selling it because I use a sling more often. It comes with an inner pad, so I think it can be used from one month old.