The bottle"s wide design makes it ideal for moms who are breastfeeding and/or bottle feeding. Its patented anti-leak bottom vent prevents air from mixing with liquid, helping to keep air out. It is also clinically proven to reduce gas, colic and spit-up better than other leading bottles. You will receive one 6 ounce VentAire Advanced Wide Bottle.The item comes in different colors such as White, Teal, Pink, Blue, Yellow and Lavender.