Material:Fabric:100% Lycra Filling:100% foam particles. Comfortable height,ergonomics,free arms.No red marks on the face, no drooling.Shoulder and neck are not sore, arms are not numb.Breathable design,breathing smoothly.Soft and comfortable,skin-friendly and breathable Designed according to the shape of the headrest when sleeping on the stomach,the middle concave and both sides are convex,scientifically protect the head,and feel comfortable in the afternoon nap. Very light and easy to carry,the small pillow is light and easy to carry. It is soft and breathable,fits to the head, shockproof and compressive,good resilience,quiet,environmentally friendly and safe. Multi-purpose,students are always prepared for lunch breaks between classes,to relieve morning study fatigue,and to restore the brain's quick thinking;office for working people is always available. Dissipate fatigue and stress, regain quick thinking, and have more energy in the afternoon.