BabyBjörn Baby Carrier Synergy is a fusion of two popular products: with the comfortable back support of the Baby Carrier Active coupled with the light and breathable 3D mesh material of the Baby Carrier Air, it provides comfort and coolness for parents and baby. The unique 3D mesh material efficiently reduces heat and moisture. The sturdy back support and the shoulder straps offer maximum support and distribute the babyŽs weight evenly over the parent`s back and shoulders. BabyBjörn Baby Carrier Synergy has been tested according to the Oeko-Tex Standard 100, class1. It can be used for babies from 3.5 kg (8 lbs.) up to 12 kg (26 lbs.)