Product Parameters Name: Plant Marker Material: PVCPlastic Color: White,Red,Yellow,Pink,Green Marker Pen Color: Black Shape:Ring Features:Waterproof,Reusable Plant Marker are made of Non-toxic PVC plastic which is not easy to break,they won't rust like metal tags and will not rot as wooden tags,can use for long time. Plant Marker has smooth surface, easy write on the label with pencil or marker pen ,you can write whatever you want on the label. You can give your plants a name or record its grow situation,can distinguish which plants are planted. Plant Marker are easily cleaned with household cleaner or alcohol when you want revise information.UV resistant,will not affected by weather (bright sun, high heat,rain) , the signs are not easy to fade,can use many times.