10-5945 Size / Color: X-Heavy / Black Features: -Used for rehabilitation and exercise.-Achieve specific repeatable and measurable levels of performance with each rep.-Patented indicators show exactly when four levels of elongation are reached.-Each level of elongation corresponds to a specific amount of applied force.-When a level of force is reached the indicator shape will have completely morphed from a rectangle to a square.-Lightweight, portable, and measured repeatability.-Each level has four indicators that show when 50pct, 100pct, 150pct and 200pct elongation have been reached.-Dispenser box of 40 - 4-foot ready-to-use. Color/Finish: -Licensed to use the Thera-Band color sequence, so resistance level is easily identified. Specifications: -5 Progressive levels of resistance. Dimensions: -Dimension: 48" D.