Something natural to rest your head on at night! Our organic wool woolie ball heavy filled king pillow features organic wool fill that has been precompressed into little balls and an organic cotton zip off outer. This pillow is supportive and firm. The zip off outer allows the fill to be adjusted as desired. The heavy fill is recommended only for side sleepers. The organic cotton has a cooler feel than polyester due to its natural breathability while the organic wool is naturally temperature regulating and bacterial and mold resistant. This makes this pillow very low maintenance. Our organic woolie balls consist of organic wool that has been precompressed into the shape of tiny balls. The pillow has an overall firmer feel and it does not have any possibility for compression over time. If you are wanting to look into a pillow where compression is also not an issue but with a softer feel, our Kapok pillow is a great option to consider. We also highly recommend checking out some of our organic cotton pillowcases to go with your pillow. Spot clean only, not returnable once opened. Made here at our San Diego, CA Facility. Ships within 1-3 business days.