Product 1,Relief neck pain in just 10 minutes. 2,Simple and effective physical solutions to sooth away stiff neck, helps in restoring proper cervical curvature associated with consistent use. 3,Dense and soft foam design provides sturdy, lightweight, and comfortable base. 4,Can't be used as an ordinary pillow all night long. 5,Normally you will need 1-3 days to adapt to this pillow, because your neck needs time to familiar with the new corrector curvature. You will enjoy an extreme comfort after you get used to it Do not use it for more than 5 minutes for the first time and cannot replace daily pillow use. Notes: 1. Due to the difference in display and lighting effects, the actual color of the item may be slightly different from the color shown in the picture. Thanks 2. Due to manual measurement, please allow 1-2cm measurement deviation.