Neutral Kit: Stage 1- Ivory, Stage 2- Tan, Flat -Slate, Bulb- Taupe, Slant- White STAGE 1 - For babies without teeth. The soft, pliable nipple is easy for babies to suck. STAGE 2 - For babies with teeth. The thicker nipple is bite resistant, perfect for older babies and toddlers. FLAT - For babies with or without teeth. A great option for babies who prefer a flattened shape. BULB - For babies without teeth. A soft pliable nipple for babies who prefer a bulb shape. SLANT - For babies without teeth. A soft pliable nipple for babies who prefer a slant shape. New in bag