5-Star Hotel Quality Sleep Pillow for Neck Care, Enhanced Sleep Comfort with Temperature Regulation *New and Unopened [Dual-Layer Structure Pursuing Ideal Sleep Comfort] This pillow features a dual-layer structure that combines flexibility and support, perfectly conforming to individual body shapes. It disperses body pressure, reducing strain on the neck and shoulders, and achieving ideal sleep comfort. [Comfortable Temperature Regulation All Year Round] The pillowcase utilizes the latest space technology. PCM phase-change material reacts to body heat, absorbing and releasing it to maintain a comfortable sleep environment regardless of the season. [Choice of Comfortable Pillowcase Textures] The pillowcase is double-sided. One side is made of 100% cotton for a soft, gentle feel against the skin, while the other side is a smooth blue material, offering a pleasant tactile sensation. You can choose which side to use according to your preference. [Accommodates Any Sleeping Position] The generously sized pillow is ideal not only for back sleepers but also for side and stomach sleepers. It gently supports the neck and shoulders, maintaining their natural curves. The pillow core cannot be washed, but the pillowcase is washable. #SleepPillow #MemoryFoamPillow