Blackroll Foam Roller (Standard 12 X 6, Black/Yellow) The BLACKROLL STANDARD has average hardness and is appropriate for all applications. A functional tool for a self-myofascial-therapy. Environmentally friendly as it is made using an energy-saving production process and it is free of propellants and chemicals. Easy-to-Clean, Water Resistant and Odorless. BLACKROLL STANDARD, 12" x 6" Roll, Black/Yellow.