Lorell 3/8-Inch Thick Rectangular Roll-Up Chairmat, 48 by 60-Inch, Dark Cherry Bamboo is harvested in an manner from sustainable forests Material is kiln-dried to the optimum moisture content to minimize cracking and warping Premium, nonslip felt backing keeps mat in place and protects your floors Bamboo is harvested in an eco-friendly manner from sustainable forests Material is kiln-dried to the optimum moisture content to minimize cracking and warping Premium, nonslip felt backing keeps mat in place and protects your floors