Notes: blank patches don't include castor oil High Quality Material:This patches belly button is made of breathable hydroentangled nonwoven fabric that is skin-friendly and hypoallergenic. the pack has a unique 2 mm thick pure natural cotton core layer, the maximum absorption capacity is up to 5 times, Anti-overflow frame & PU waterproof layer locks oil avoids maceration, and is more absorbent than traditional wool flannel. (Note:Castor oil is not included) Benefits of Castor Oil Pack Wrap:This castor oil patches are made of 100% organic cotton for soft comfort and easy absorption. The round leak-proof frame and waterproof polyurethane layer provide double protection to securely lock the oils inside the patches. You don't have to worry about spills even after long hours of wear. Keep your sheets and clothes clean for a worry-free castor oil treatment. Widely Used-Travel Essentials:size 2.8 inches x 2.8 inches, 100 pieces total. The self-adhesive castor oil patch has hypoallergenic adhesive, which can be firmly attached to various parts of the body without shifting. So you can wear this castor oil pack compress while working, sleeping, or even doing yoga, Take it and use it at any time, covering more life scene. How to Use Easily and Comfortably:First take out the belly button patch, tear off the release paper, add a few tablespoons of castor oil, attach the castor oil pad over belly button, Place hot water bottle or heating pad on top, remove the pad Replace after use. Our castor oil patches are disposable, just replace them, no need to wash them. Save your precious time and energy. (Note: Do not get castor oil on the outside of the inner ring) Perfect Gift:Self-adhesive pack Easy to Wear in daily life. Strong viscosity, not easy to warp and fall off, functional and practical, breathable and comfortable. Castor oil patches make the perfect gift for your best friend, sister or mom. It can provide a comfortable experience for their bodies.