Description:Natural fiber protective rings can protect plants from weeds more effectively than loose grass mulches. It can protect your plant from frost and also maintain soil moisture and prevent the loss of moisture and nutrients. It is an excellent plant cover protection pad.Specification:Name: Coco Coir Fiber Tree RingsDiameter Size: Type A: about 20cm/7.87in Type B: about 30cm/11.81in Type C: about 40cm/15.75inPacking List:1 x Coir Fiber LinerNotes: 1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.2. Due to manual measurement, there is a tolerance in the product size.