Vintage Nuby Infant feeding system. One bottle is 2 ounces for stage 1 baby food or cereal. The other bottle is 4 ounces for stage 2 baby food or cereal. The 4 ounce bottle comes with a sippy spout and the 2 ounce bottle has a nipple. The spoon is interchangeable between the bottles. This set is in excellent condition and a super rare find.