【Warm Tips】In order to reduce the damage during transportation, we attached a dust cover, you can remove it after receiving the product. The mattress wedge topper is compressed by a roll. Please decompress it flat before use, and place it in a well-ventilated environment for 24-72 hours to fully expand. The expansion time of the mattress elevator will vary depending on the environment. 【Improve Health】This wedge mattress topper is designed to relieve GERD, Acid reflux, snoring, postnasal drip, and cough. This inclined bed elevator is also suitable for promoting blood circulation, releasing pressure on shoulders, neck, and back, postoperative recovery, and breathing problems. 【Multi-purpose use】 This wedge mattress elevator provides four ways of use. Under the mattress: 1. As a mattress elevator. 2. As a leg elevator. Above the mattress: 3. As a wedge topper. 4. As a leg rest topper. In addition, it can be easily placed, and you can adjust it according to your needs. 【High-Quality Materials】To promote your health, this mattress wedge is made of CertiPUR-certified high-density foam. It provides you with good support and comfortable sleep along with comfort and convenience. 【Multi-size options】This bed wedge mattress elevator has options of 5 inches or 7 inches, you can choose the suitable size. If you have any questions about our products, please feel easy to contact us, and we will do our best to help you. This mattress wedge elevator is made of high-density foam certified by CertiPUR, which can provide good support,We put a dust cover over the mattress to protect it from damage during transportation,after you receive can remove as needed.This mattress lifter is specially designed for people with GERD, acid reflux, snoring, postnasal drip, coughing, and can also help promote blood circulation, relieve shoulder, neck and back pressure, post-operative recovery and breathing problems, aiming at Improving your health, helping you to get high quality rest and sleep. This bed elevator has a powerful 4-in-1 function. When it is placed under the under mattress wedge, it can be used as a wedge mattress elevator to raise the head or legs, and it can also be placed on the bed as a wedge mattress topper or a leg lift. In addition, it can meet your needs. This wedge mattress under bed has a variety of sizes to choose, including 7-inch and 5-inch Twin, Twin XL, Full, Queen, King, California king, you can choose according to your own needs. The foam itself will have a slight smell, but it is harmless to the body, please decompress the bed elevator flat before use, and place it in a well-ventilated environment for 24-72 hours to let it dissipate the smell and completely expand. To ensure a perfect user experience for you, we do our best to provide high-quality materials and good after-sales service to ensure you can get product quality and service guarantee as best as possible. We are looking forward to you visiting our store again.