castor oil pack kits: Our organic massage oil set includes two castor oil pack wraps for the knee and feet, designed to promote blood circulation, reduce inflammation, and alleviate muscle pain. And save time and efficiency. Note: castor oil is not included. adjustable design: The castor oil pack wrap for the knee is 11.8 inches long and 6 inches wide, with a 7.5 inches elastic band that you can freely adjust the length according to your body shape. And then do your things freely. premium materal: Our castor oil pack wrap kit is made of short plush fabric which can better absorb castor oil. The outer layer is TPU, which holds in your natural body heat and prevents castor oil from leaking, so you don't have to worry about oil leakage when using it. reusable and reliable: our organic castor oil wrap can maximize skin contact with castor oil, and help to absorb castor oil to improve the utilization rate. they can be washed many times, are sturdy, and are easy to use for a long time. easy to use and safe: Simply wash before first use, apply castor oil, and wear it. Replace after approximately 30 uses or 2 months. Do not use it when pregnant, and consult with your doctor if you have any concerns.