1For the Neck Thyroid: Castor oil is good for improving blood circulation in the neck, relieving muscle pain, reducing inflammation and relieving thyroid problems. 2Premium Fabric: The inner layer of pack is made of dralon fabric, which can better absorb castor oil. The inside of the outer layer has a waterproof and oil proof coating to prevent leakage. The outside is made of breathable fabric for more comfort. 3With Elastic Band: The thyroid castor oil wrap has an elastic band at one end, and the micro elastic design allows the thyroid castor oil neck to fit better around the neck, suitable for most people. 4Large Contact Area and Reusable: Thyroid castor oil pack can maximize skin contact with castor oil, improve the utilization rate and efficacy of castor oil, machine washable, durable and easy to use. 5Tips for Use: Clean castor oil neck pads before first use. To use, spread castor oil evenly in the middle of the castor oil thyroid pack, not falling on the seams, then tie at a comfortable Angle around your neck.