The newest pillow in our collection; Sleep On Copper Pillow has a silky smooth fabric, infused with copper mineral & filled with the feathery down alternative fiber. So yummy!! The zippered closure allows you to add or remove fill to your preference. This pillow is as healing as it is comfy. Copper helps your cells rejuvenate faster which is so important to restorative sleep. Proven to assist with deep restorative sleep.