9-4 oz(only used for 4 months) and 3-8 oz(only used a handful of times) anti colic, gas, and spit-up bottles. Purchased at Target. Includes all parts, 12 level 1 nipples, 6 level 2 nipples, 5 caps for breastmilk fridge and freezer storage, and organizer to keep all parts in order. Sanitized after every use. 4 oz bottle fits perfectly onto Medela breast pump. Smoke free home.