They are expertly tailored to ensure maximum comfort for any and all sleeping positions.Non-temperature sensitive memory cotton, 5 seconds slow reboundSafe invisible zipper does not hurt the skinSlow rebound neck memory pillowAir layer jacket, soft and skin-friendly, comfortable and durableApplicable number: SingleFilling: Memory foam (polyurethane)Packing: Gift boxprompt:1 Please check the size and color before purchasing.2 Does not include items other than those shown in the product photo.3 Please note that due to different monitors, slight chromatic aberration may occur, please understand4. The measurement is manual measurement, the error is normal, please allow 2-3cm difference, depending on the actual object.5. Welcome your sharing and feedback so that we can provide you with better products and services.