Thera Band Stability Trainers are oval-shaped, color-coded pads, supplied in three densities to provide a progressive system of balance training for rehab, post-rehab conditioning, and fitness applications. Green (firm) and blue (soft) pads are molded in closed-cell foam with a ridged surface. The black (X-Soft) pad is inflated with air and has rounded points that provide tactile stimulation on one side. By combining the different pads, patients can improve balance and proprioceptive skills by progressing through levels.