Back-up Mat "Rakuui 10 degrees" This is an inclined mattress. Triangle mat. Made with 100% domestic materials. This is a genuine product purchased new from Miraizu Co., Ltd. Comes with instructions. I am selling it because it doesn't fit the size of my bed. After use, it was stored at home in the dedicated bag and cardboard box it arrived in. I will send it in the same bag and box. It has only been used twice and is in beautiful condition. When used, it was covered with a cover. The color is off-white, like cream (slightly yellowish). Upon close inspection, there are some small, dark stains, which may have been there originally, or may have occurred during storage (see photo 10). Please refrain from purchasing if you are concerned. The fabric is domestically made and quilted, making it sturdy and comfortable to the touch. Made in Japan, so the construction is solid and carefully done. At 10 degrees, it's not that high, so it shouldn't be too difficult to sleep on (of course, it's a little more burdensome than sleeping flat). The outer cover can be removed and washed, which is hygienic. It is also effective for acid reflux, eye pressure, and various other situations where you don't want to sleep flat. ======== Excerpt ======== The back-up mat "Rakuui" is a mat made for those who suffer from acid reflux, including acid indigestion, and heartburn upon waking. 10 degrees is a gentle angle with a height of 14 cm. ＜Size＞ Length 80 x Width 83 x Height 14 cm ＜Materials/Materials＞ Outer fabric: Domestic jacquard quilting (32% polyester, 68% cotton) Filling: Chip urethane ＜Country of manufacture＞ Japan It is said that sleeping with your back raised 15cm to 20cm at bedtime is good for preventing acid reflux. You won't fall off the bed, even if you toss and turn. Recommended for those who: have nausea or vomiting upon waking, have an irregular lifestyle and go to bed soon after eating, feel acid coming back up and can't sleep well, want to alleviate snoring, have had a total gastrectomy in the past, or are pregnant. Setouchi City, Okayama Prefecture, known as the Aegean Sea of Japan, is full of various charms, such as the beautiful sea and warm climate. This is a safe, made-in-Japan product handcrafted by local craftsmen in Setouchi City. ======== End of Excerpt ========