Hullwinkle is a sustainable pillow brand inspired by the centuries-old Japanese buckwheat pillows. Their multi-chambered construction contours to your body for deep, secure, and restorative sleep. Hullwinkle pillows are plant-based, toxin-free, and made by hand with love in the USA. When its life as a pillow is over, the buckwheat hulls can be used in your garden or yard as a natural fertilizer.