The larger version of "katao," "MAX katao," is a peanut-shaped myofascial release ball. It deeply and firmly presses and loosens muscles over a wide area. It's firmer than "MAX yawako," with a hardness similar to a soft baseball. Like a foam roller, you can simply place it on areas of concern and roll it to release fascia and relieve stiffness. It can also be used as a stretch ball. - Brand: La-Vie - Model Name: MAX katao - Quantity: 1 piece - How to Use: Can be used for back and waist massage - Features: Compact size for easy portability - Hardness: Hard Thank you for viewing.