MATERIALS & CARE: Skin-friendly pillow cover + buckwheat hulls filling. The inner pillowcase has a hidden zipper, inner is refillable, you can adjust the loft of your pillow by removing or adding buckwheat hulls. Remove pillow cover and liner before washing. Do not wash filling. COMFORT & RELAX: Handmade, ergonomic design. Neck Pillow has breathable fabric. Our buckwheat pillows are designed with the utmost comfort and versatility in mind. Make you feel very comfortable. SUPPROT FOR YOUR NECK: Whether your napping at home or in the office our buckwheat hull pillow supports your neck and head in a position, makes you more comfortable, more relaxed. Why Choose Buckwheat Pillow: Buckwheat hulls filling can relieve your neck problem. We use buckwheat hulls for our pillows! Adjust the fill level to find your ideal fullness, adjust your pillow???s filling as needed unlike others' pillows, and enjoy the b comfortable of the pressure-relieving neck and shoulder support. EDOMI Provide 100 Nights Free Trial for Pillows, RETURNS are FREE and EASY. if you unhappy, REACH US ! (PS: We believe you should sleep on your pillow to decide if you like it, and it can take the body least 30 nights to adjust to a new pillow.)