A smooth to the touch luxurious 400 thread count organic cotton sateen California King fitted sheet perfect for all weather, especially the hotter season. The organic cotton has a cooler feel than polyester due to its natural breathability. Hydrogen Peroxide Whitened with a stitched in thin stripe design. Softens further after washing. Machine wash and dry on regular. Add 1/4 cup of vinegar to the load to increase softeness. Fabric is not pre-shrunk and will shrink to the proper size once washed and dried. Covered elastic is featured around the entire fitted sheet to ensure the best fit. Made in the USA. Ships within 1-2 business days.