1.Rich in Quantity: you will receive 30 pieces of non woven tree mulch ring, each measures approx. 20.5 inches/ 52 cm in outer diameter and 2.4 inches/ 6 cm in inner diameter, enough quantity and proper size to meet your needs and replacements, and you can also share some with your friends and family members 2.: the weed barrier mat is easy and convenient for you to use, it is designed with precut holes and seams, you just need to place the tree mulch ring directly on the roots of the trees, the center hole can be enlarged to fit most tree trunk, bringing much convenience to you 3.Breathable Design: the tree mulch ring is designed into circle ring shape, which can maintain soil temperature and nutrition, effectively keep your plants away from weed invasion and lawn mower, allow plants to grow vigorously and ily 4.Reliable Material: the tree protector mat is made of non woven material, reliable and reusable, sturdy and lightweight, not easy to break or tear, which can serve you for a long time and you can use it with confidence