Our slings have been tested to carry babies up to 14 kg.
Are you going to carry 14 kg babies in a sling for a long time? Mmmh not really, it would be uncomfortable because the carrying is asymmetrical and rests on only one of your shoulders and hips. In the first months you will carry your baby in the sling as much as you want, then when they grow and have less need to be carried, the sling can help you for short moments when baby can no longer lift their little body.