Premium Material: The pillow is made of high quality polyster which is durable and not easy to tear. 3D shape, fitted to the waist, with support on the left and right lumbar sides for a restful night's sleep Size: The size of the pillow is 50cm in length and 30cm in width. The Maximum height is 9cm and the minimum height is 4cm. The booster pad has a diameter of 18cm and a thickness of 1.5cm Humanization Design: The middle of the pillow is filled with buckwheat hulls, which are hard enough to give good lumbar support. Both sides of the pillow are filled with pearl cotton, which is soft and comfortable and does not strain the waist when lying on the side. The middle section is height adjustable with a 1.5cm booster cushion, the middle section can be adjusted to 4-5.5cm to give you the most comfortable height for a good night Breathable: There are countless air holes on the surface of the pillow to ensure heat dissipation and breathability, so you won't sweat at night due to stuffiness, which can cause sweat to accumulate and stink in the pillow in the long run, and you won't be unable to sleep due to stuffiness, etc. Wide Application: Suitable for elderly people with bad backs, people with body image problems, people with back pain caused by lying flat on the back hollow, etc. Perfect for use in bed, on the sofa, in the car, on the seat etc. Product Description Product Details Breathable The lumbar pad has ventilation holes on the front and back to dissipate heat effectively, so you won't get sweaty at night due to the sweltering heat and won't have a hard time sleeping. Adjustable The middle part of the lumbar pad can be adjusted to suit the height of your waistband with the matching booster pad, so that the pad is not too low to be effective and not too high to be uncomfortable. Soft The middle is filled with buckwheat hulls, which are moderately firm to provide good support and relax your lower back. The sides are padded with pearl cotton, so you can lie on your side without getting a b