The Helix Down & Feather Pillow features an inner chamber filled with a proprietary mix of feather and down filling to prevent over sinkage and to provide stable support, helping to reduce neck and back pain for back sleepers, stomach sleepers, and side sleepers. Designed with an inner core of feather and down blend for a soft pillow that provides stable support and two outer cores of white down for luxury plush comfort. Ultra-soft cotton cover made with closely woven lightweight fabric to ensure breathability and airflow. Featuring German Piping along the edges to ensure a strong seam for a pillow that is great for any sleeping position. 1 Year Manufacturer Limited Warranty.