Philips avent classic feeding bottle set is an ideal starter set for anyone bottle feeding their baby the classic bottle set comes with 3 bottles included that come complete with the avent classic plus anti colic teats the teats fit into avents unique venting system that prevent vacuum build up in the bottle clinically proven to reduce infant colic the 9oz bottles are a standard size and can be interchanged with other avent parts and comes with a leak free top to prevent an mess while feedi