The RUPES BigFoot Coarse Wool 2.5" Pad offers a coarse dual-density wool fiber on a dense foam backing which will allow for quick leveling, superior cutting and highly efficient defect removal capabilities. The advanced wool fiber technology was designed to prevent haze and other unwanted results caused by the traditional wool pads currently on the market Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.