You May Want to ask:
1. Are these 100% silicone?
Answer:I believe so. They are very soft and will only fit together in order. So after they are a soft toy to chew and play without hurting themselves or others when thrown. They are a lesson in shapes as well as numbers
2.. does each block have a hole?
Answer:Each block have a hole that produce sounds.
Washing by 100℃ temperature boiled. Attempt to get all excess water out afterwards every time to attempt to keep mold from growing inside.
3. Do these need to be boiled?
Answer: Yes, boiled it before use
4. How many blocks are included?
Answer:10-12pcs