Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not good for young babies

I read all the reviews saying the Plan Toy Stacking Ring was small, but I didn't expect it to be THIS small. It's like a miniature stacking ring. My baby is 7 months and putting all his toys in his mouth, so I liked that it was made of wood and safe dyes. However, being that it is made of wood, most of the rings have wood grains that are not sanded down completely smooth. It's rough around the edges, and can even scratch delicate baby skin and lips. I'm putting this toy away until he's able to play with it without putting in his mouth.