Plastic reeds is a rare product. On the basis of reeds, the material and timbre are better improved, which makes up for the shortage of reed whistle. It won't get moldy. One piece can be used for a long time. It's very durable. There are many reed sentries on one roof, which is far more cost-effective than reed sentries. Economical, no need to buy reeds frequently, making playing more convenient, no need to change reeds