PureLoft is filled with dermatologist-tested synthetic microfiber that mimics goose down in loft (full and fluffy), slow compression and bounce-back. This pillow also offers resilient support and long-lasting, all-natural, powerful protection from bacteria and dust mites. Percale fabric gives it a smooth feel and crisp look and the soft density is best for stomach and side sleepers. 100% polyester fill. 100% cotton shell. Commercial wash/dry. Soft: Standard 20 oz; King 30 oz. Medium: Standard 24 oz; King 34 oz. Let's talk timelines. Synthetic stuffings have an average lifespan of four years. If you have allergies, your pillow should be replaced every two years. And high-quality down can last ten to fifteen years with regular washing and fluffing. No matter what the fill in your pillow, if the form is lumpy and uneven or you're experiencing back and neck pain, it's time for a replacement.