Nishikawa Air 4D Pillow, a Special 3D Structure Designed for Optimal Sleep, with Enhanced Breathability for a Comfortable Sleeping Environment.

Size: 63x38x11cm Cover: 100% Polyester; Filling: Urethane Foam, Urethane Resin Country of Origin: (Side Stitching) Japan; (Filling/Gel-Coated Urethane Foam) China; (Outer Urethane Foam/Urethane Foam Backing) Japan Maintain a comfortable sleeping environment with a combination of materials that improve breathability and reduce internal temperature rise. This conditioning pillow has evolved to allow precise height adjustment based on body shape and bedding. Special 4D structure for a perfect sleep form. [Head Pressure Distribution] The urethane surface layer that directly contacts the head is woven with urethane of varying hardness in a grid pattern, creating a hybrid mesh structure that combines excellent head pressure distribution and breathability. The reduced contact area also reduces stuffiness. [Refreshing Sleep] The middle layer is filled with gel to reduce internal temperature rise. Because it does not directly touch the skin, it does not overheat or cool down, reducing internal temperature rise and reducing stuffiness. The lower layer is made of a new, highly cushioned material, providing a secure fit and support. [Height adjustment] The pillow's interior is fitted with 2cm and 1cm thick urethane sheets for height adjustment, allowing you to adjust the height in 1cm increments up to 3cm. The 2cm urethane sheet is also divided into four sections: the neck area, the back of the head area, and both sides, allowing you to individually adjust the height when sleeping on your side.