Our Solus organic cotton pillow covers are the ideal choice for someone who has sensitivities to chemicals or synthetics and needs an all-natural dust mite allergy cover. They are also great for a sensitive sleeper who must have the softest, quietest and most breathable fabric as a pillow cover. Best of all, our Solus organic cotton pillow covers create a safe, healthy and successfully barrier against dust mites and prevent your from inhaling their allergens. These covers are well-made and durable. We are sure they will meet your expectations for use, laundering and longevity. For best results, be sure to encase your mattress and comforter as well.