Everything you need to start feeding, in one set. This twin package includes one mamachi Standard Small bottle and one mamachi Standard Large bottle, perfect for transitioning from newborn feeds to bigger portions without buying separately. Twin Set: One Standard Small bottle + one Standard Large (260ml) bottle. Two Color Options: Blue and Pink. Grows With Your Baby: Covers both early newborn feeds and larger portions as your baby grows. Nipples sold separately: Compatible with the mamachi Silicone Replacement Nipple in 1-hole, 2-hole, 3-hole, and Y-cut flow stages.