I've hesitated to buy this product for awhile due to cost, but after so many castor oil pack messes and needing to do them frequently now, I finally gave this a try . I'm very impressed with the quality and thought that went into the design. The outside of the pack is a smooth, buttery soft, non-toxic, water proof material that will keep the castor oil where it belongs. The inside is extremely soft, high quality organic cotton. The organic cotton is very important because the castor oil is penetrating deep into your system through the skin and if your pack liner has any chemicals or toxins, the castor oil will take it into your body with it. The straps are soft, super stretchy nylon so they can easily fit just about any size body very comfortably, while keeping the pack in place while you sleep or move about. I went the extra mile and bought a few of the liver pack cotton inserts ($22) from the company's web site too. These fit securely on the inside of the pack and can be washed or discarded when saturated, greatly extending the life of the pack.
