rubber tree rings 1. To protect young trees and shrubs. 2. 100% recycled rubber shreds, coloured brown. rubber tree rings FeaturesTo protect young trees and shrubsmaterial100% recycled rubber shreds,coloured brown and preformed in our factory into shaped mats which have a central hole pre cut and parted with a tapered underside to allow for variations in size, shape and growth.CharacteristicEnds ...