Birth Set Natural Feeling ChiccoSet includes 2 Bottles 150ml (0m+), 2 Bottles 250ml (2m+), 1 adjustable flow teat (4m+), 1 Physioforma Soother, Soft (0m+) and 1 3 in 1 cleaning brush. The bottles have a rounded, sloping teat and an anti colic valve. The sloping teat allows for comfortable positioning while sucking, and its shape similar to a mother's breast facilitates the transition between breast and bottle.