One is a soft, textured leaf-shaped teether that massages your little one's gums. The other is an apple-shaped, water-filled chillable teether that cools and soothes. Both are easily removed for cleaning and sanitizing. Press the light-up music note button to activate playful songs, sounds, phrases and melodies. The caterpillar̢‰â?ã¢s ring design is also perfect for little hands to grab and hold. Munch and have fun with the cute caterpillar.