DS is 7 months and 21lb and loves to be carried, esp on my hip. Have a backpack thing which he enjoys but want something not as bulky for the summer festies etc and also something i can have in my bag for unprepared times when i dont have buggy or backpack and have to carry him for longer than 5 mins. Have been looking at wrap slings and have heard great things about them but only know people who have had newborns in them and they have not tried them in way other than on the front. So, i was wondering what anyone would recommend?