TheContemporary Natural5ft. x 8ft. Mountain Collection offers a variety of compelling patterns and styles both simple and intricate, with a black border. All Anji Mountain bamboo, the strongest and hardest bamboo in the world with poly border, which cleans easier than cotton. Eco friendly bamboo from sustainable forests. Patented non slip, ventilated rug pad backing cushions, keeps mat in place and extends the life of the rug.Bamboo is carbonized and kiln dried to help prevent cracking and warping. Cleans easily with damp cloth or mop.