Recycled Heavy Duty Rubber Mower safe with heavy design No landscape staples needed Textured / natural color Porous design for equal watering to tree Tree Mulch Mat Ring Weed Preventer by Rocky Mountain Goods is the best solution for keeping weeds away and keeping your trees healthy and happy. Made with recycled heavy duty rubber this tree mulch mat stays in place and is safe to mow over unlike coco fiber mats which get sucked up into your mower. The heavy duty design also creates a more uniform look as the tree mat stays in place. Natural color and textured design provides a natural look. Eco friendly recycled rubber is made to allow for equal water seepage for uniform watering. Tree Mulch Mat Ring Weed Preventer by Rocky Mountain Goods is now the most popular tree mulch mat on the market.