Harumeku My Waist Pillow Gray Unused Opened for photography. Light, fluffy, and soft. Just add a "second pillow" to reduce the strain on your posture while sleeping! Improves sleep quality. For those with a hunched back, place it under the lower back; for those with swayback, place it under the knees. It guides you into a gentle S-shaped sleeping posture. The thickness is only a few centimeters, but the difference from your usual posture is significant, and the risk of back pain is high, so we deliberately made it this thin. When placed under the lower back, the patented inner material fits on both sides and supports the body moderately. ● Reversible for year-round use! For autumn and winter, use the "brushed fabric" with a smooth texture on the front. For spring and summer, use the "mesh fabric" on the front, which absorbs sweat well and dries quickly. ● For those with swayback, place it under the knees, spread your legs shoulder-width apart, and place them on both sides of the pillow folded in half. ● For those with a hunched back, place it under the lower back, just to fill the gap in your lower back. It doesn't interfere with turning over. ● Unisex ● Machine washable! Unused, but has been opened once. Thank you for your understanding. Will be compressed and folded for shipping. How about it for those looking for one? Harumeku Body pillow Lower back pain Made in Japan