100% Anji Mountain bamboo. The Cobblestone Mountain Collection offers a variety of compelling patterns and styles both simple and intricate. The strongest and hardest bamboo in the world. Eco-friendly bamboo from sustainable forests. Made of the finest quality, sustainably harvested bamboo in the world for supreme durability. Kiln-dried bamboo is machine-planed and sanded for a smooth finish. Patented, ventilated, non-slip rug pad backing cushions to keep mat in place and extends the life of the rug. NOTE: Slight color variations may occur due to the unique, natural qualities of the bamboo. 96 in. L x 60 in. W x 0.2 in. H (17 lbs.).