Memory Foam Nap Pillow For Travel Headrest Neck Support Cushions Office Rest Lunch Break Pillow Orthopedic Student Desk Sleeping|Travel Pillows About Chromatism All products in this shop are taken in kind, due to the difference in sunlight, angle, and Monitor.There may be a certain color difference between the picture and the product, and the actual color shall prevail. About bubbles The product is a mould process. If a small hole or air bubble in the inner core is a normal phenomenon, it is not a product quality problem and it can be used with confidence. About style Standard style: memory foam core style. Upgraded style: bamboo charcoal memory foam core style. Premium style: magnetic cloth lined with memory foam core style. The inner core can not be washed and can be placed in a ventilated place to dry. Pillowcases can be washed. Manual measurement, there may be an error of 1-3cm, which is normal. Bamboo charcoal has a loose and porous structure, and its molecules are fine and porous, and the texture is hard. Has a strong adsorption capacity, can purify the air and eliminate odor. Contact with the human body can absorb moisture and perspiration. After scientific refining and processing, it has been widely used in daily life. Magnetic properties are the properties of matter, and the human body also has a certain magnetic property. It has been confirmed by scientific experiments that the use of magnetic substances and biomagnetic effects inside the human body can adjust various unbalanced or abnormal functional states in the human body to improve human health. Play a protective effect.