Stability balls or Swiss balls are utilized in conjunction Size X Male Enhancement with exercises and sometimes weights to extendStability balls or Swiss balls are utilized in conjunction with exercises and sometimes weights to extend strength, flexibility, balance and posture. They sell for around $30 and are available with a pump. If they do not , use a standard pump to inflate. strength, flexibility, balance and posture. They sell for around $30 and are available with a pump. If they do not , use a standard pump to inflate.