I have a HAB for DS2 which is great and 95% of the time will put him straight to sleep but i find it a bit fiddly sometimes when i need to pop him in there quickly and do something. I also think it will get a bit hot in summer and i would really like a sling i can breastfeed in as i run after DS1. I am thinking of getting a sling for these requirements but ds is quite a big baby at 5.5kg at 4 weeks so i dont know how much use i will get from it. Anyone used a sling with a big baby? When did you find it uncomfortable?