Crafted with premium tartary buckwheat hulls, these hulls are clean and plump, helping keep you comfortable year-round with warm winter and cool summer properties while providing firm, supportive cushioning for your neck s natural curve to ease neck strain and improve sleep quality. The pillow features an ergonomic triangular side profile with a bone-like design that evenly and gently supports your neck and head, plus an adjustable filling design so you can add or remove buckwheat hulls to find your ideal sleep height, helping you align your neck properly and boost your sleep quality. A hidden, tightly overlocked zipper delivers a sleek, polished look while gliding smoothly without fraying or ripping, letting you easily disassemble the pillow without snagging fabric or hair. The removable pillow cover is quick to clean, holding its shape well and resisting excess shrinking, fading, pilling after washes-simply machine wash on a cold, gentle cycle. Available colors: Gray, Pink