D-Core Fiber Pillow Patented D-shaped center supports neck to relieve pain, restore natural curvature of neck and upper spine. Filled with cool and comfortable Corefill 100% polyester fiber, non-allergic. For back and side sleepers. Durable and washable. Get proper cervical support at an economical price. This orthopedic fiber pillow's patented D-shaped center gently supports the head and neck during sleep to help remedy many common ailments, including tension headaches, neck spasms, arthritis and snoring. It complements active treatment in the Correct stage of the TriCare Circle of Health. And once in the Maintain stage, and helps ensure continued good health by sustaining the proper curve of your neck and spine. Suitable for both back and side sleepers, the D-Core is filled with cool and comfortable, non-allergenic Corefill 100% polyester fiber. Full size and midsize versions make it easy to choose the size that is right for you. D-Core Pillow Mid Size: 22" x 15" D-Core Pillow Full Size: 24" x 16" Free Ground Shipping on Orders over $80 for Supplements! COUPON: Coupon THX2OFF50 for $2 off on orders over $50.