★ Recommended for those who suffer from heartburns or symptoms of backflow esophagitis when waking up. ★ Those who have diagnosed "Backflow Esophagitis", those with a waking up chest or vomiting, those who eat irregularly, and fall asleep immediately after eating, those who feel stomach acid returns, and are unable to sleep, and want to relieve snoring. ★Recommended for those who have experienced all stomach plasty, pregnancy, and those who want to have a little inclined angle. ★Easy to lift up your back with a comforter at home. ★ The Rakoui Back Up Mat is a mat made for those who have trouble with acids that contain backflow esophagitis and heartburns when waking up. The fabric is made of thick high-grade quilted material and has a nice texture. ★ In order to prevent stomach acid reflux, it is good to raise your back 15cm to 20cm when you sleep and sleep ★The 10 degree type is 5.5 inches (14 cm) tall and is intended for people who want to focus on their sleeping posture. The 15 degree type is 8.3 inches (21 cm) tall and has a steep angle, so it is suitable for people with relatively heavy conditions and people who focus on relieving symptoms than sleeping comfort. The ratchet lacoi is also a sister product that can be changed from 9 degrees to 24 degrees, so it is recommended for those who are unsure which angle to be used, or those who may change symptoms depending on the day. For those who often sleep on their side, the position of the 15 degrees Rakui often causes a cramped position at 10 degrees Rakui. *We recommend returns if you do not open the plastic bag. Please try it in plastic bag before opening. In addition, the refund value is in accordance with Amazons Return Policy. ★Setouchi City, Okayama Prefecture, a cow window, also known as the Aegean Sea, is full of attractions such as the beautiful oceans and warm climates. Rakui is a reliable Japanese product that is handmade by local artisans in Setouchi City. ★ Since its release in 2013, this product has been helping to improve symptoms such as backflow esophagitis among more than 600 people. In addition, we have received feedback from people with insomnia and more. ★