1.[Hook and Loop Fasteners Design]: NOTICE: Please remove the protective cloth on the Vel-cro before use. Our neck pillow has a layer of anti-stick cloth to prevent other things from sticking to it when not in use. After tearing off, it can stick firmly. We specially designed long side Vel-cro can meet different neck size requirements. You can adjust the tightness of this, that makes you feel relaxed. 2.[2024 Upgrade Ergonomic Design]360° rotational support: We have carried out several experiments on the travel pillow, just to find the shape of the neck pillow that is more suitable for the cervical vertebrae, which is conducive to deep sleep. The thoughtfully designed undulating shape of this neck pillow ensures comprehensive support from all angles. Enlarged both sides, neck and chin wrap design allows you to maintain an upright position and prevent excessive downward tilt and sliding of the head, which alleviates neck, shoulder, and back discomfort caused by car and air travel. 3.[ Pure Memory Foam Pillow]The travel neck pillow use the latest filler technology and high rebound pure memory foam without additives. It adopts 5-second technology, which is comfortable and durable, cushions the body and relieves painful pressure points for ultimate relaxation. Please let the product sit for a while after opening it to help the sponge rebound. Odor is normal, please put it in a ventilated and sunny place to dry. 4.[Removeable/Washable Pillowcase]The outer ring of the pillowcase is a self-developed breathable space cotton fabric, soft and elastic, sweat-absorbent, and skin-friendly. The inner ring of the pillowcase is a magnetic therapy cloth, which is Ice-sensitive material, direct with the skin cool and y, and provides maximum and comfort on your trip. The pillowcase is machine washable, so you will always get a fresh and clean pillow on your journey. (Pillow core should not be washed.)