Lazyzizi Wedge Mattress Elevator 7-Inch Inclined Mattress Topper for Acid Reflux, GERD, Neck & Back Pain, Snoring, Under Bed Wedge Mattress with Washable Cover & Non-Slip Bottom for Bedroom, QueenOEKO-TEX STANDARD 100

I bought this mattress wedge to help with acid reflux from which I've suffered with for decades. It's easy to order, got to me within two weeks and worked well. Take it out of its packaging when you're ready to use it - it's big - and let it inflate to its fullest. It recommends leaving to inflate and settle for a day or two to be sure it's the right size. We left it a day then put it under our mattress. The photo doesn't really show the angles and height, but it's the right height for us and doesn't deflate at all after being under the mattress.I've had surgery (fundoplication) to deal with my reflux, but wanted to do everything to prevent further issues with it in the future, so chose this to heighten the bed. It rises with a slope, but our normal mattress on top doesn't slip down, and nor do we. I didn't want a half bed wedge as I didn't want to feel the wedge at all, so this is perfect. It's helped my partner's reflux and I'm still reflux free. It's done exactly what we wanted. I'm glad we bought it.

I ordered a King size for my king size bed, it arrived within 7 days. but when it arrived it was a USA King size, which is much bigger, so I am returning. I have contact Lazyzizi requesting they put the measurements on the amazon page.