An unusual and ingenious design with an adjustable attachment system at the front so that you can make baby comfortable even on your own adjustable headrest to support the head during the first few months which can then be folded down when baby is older wider padded and adjustable straps to distribute the weight adjustable seat machine washable at 40c suitable from birth and up to 11 kg approx 2 year guarantee with proof of purchase this baby carrier is certified oeko tex standard