Product Description Specifications: Name: Callixe Thera Pillow Material: High-Quality Memory Foam Function: Three functions Size: One size fits all Colors: Dark gray, Light gray Package Includes: 1Pcs * Callixe Thera Pillow Note： It must be connected to a power source when using it. The product cannot store electricity. Please allow for slight measurement deviations due to manual measurement. Due to different monitors and lighting effects, the actual colour of the item may differ slightly from the colour shown in the pictures. 【Callixe Memory Foam Pillows】: Imagine Lying on the World's Greatest Neck Pain Relief.That's What Callixe Pillow Is Here For. She's the Ultimatepain-Free Comfort, Oozing Away Pain and Aches in Yourneck 【Ease Pain & Improve Sleep】: Like a Hug That Melts Your Pain Away, Callixe Pillow Isyour Superior Friend for Relieving Acute Stress and Pain. Shealleviates the Throbbing Sensation from Your Neck,Making Life Easier on Your Shoulders 【Warm Soothing Massage】: With Advanced Heatcompress Technology, Callixe Pillowgives You the Ultimate Massage for Alleviating Tensionand Dull Numbing Aches. Say Goodbye to Herniateddiscs, Forward Head Posture, Text Neck, And More 【Realigns Cervical Spine】: With Its Ergonomic Design, Callixe Pillow Realigns Yourneck at Just the Right Angle of 26°.Decompressing Thevertebrae to Finally Bring Back Your Spine's Naturalalignment. Enjoy the Superior Relief That Will Keep Your Neckand Shoulders Pain Free 【Features】: The one-function model has hot compress functions ,The two-function model has massage + hot compress functions,The three-function model has massage + hot compress + airbag lifting functions