This innovative design ensures each zone conforms to different parts of the body with specific support and pressure relief, while simultaneously cradling the spine. Regardless of your preferred sleeping position, you can always experience a comfortable and relaxed sleep. Adjustable Firmness Design - Soft Layer The soft gel-infused memory foam layer naturally fits your body curves, evenly distributing the body weight while delivering a refreshing sensation, making it feel as if you're sleeping on a cloud. Adjustable Firmness Design - Firm Layer Made with high-density support form, it provides optimal support for spinal alignment, promoting proper sleep posture, and alleviating sleep-related discomfort. Previous page Next page 1 Certificated Materials 2 Balance Temperature 3 Superior Anti-slip Previous page Next page 1 Easily Unboxing 2 Q&A 3 Size Guide 4 Multiple Use Adjustable Firmness, Customized Comfort and Superior Support & Relief Elviros mattress topper comes in two different firmness options. To switch the firmness, all you need to do is unzip the bottom, take the mattress topper out, flip it over, and then zip it back up. No matter your preference, Elviros is committed to ensuring your comfort and satisfaction. Easy to Set Up and Assembly Coming with a compressed pack, you just need to pull it out, unroll it, cut the plastic and wait 48 hours for fully expanded. Then it’s time to enjoy a restful night's sleep! Removable & Washable Mattress Topper Cover Certificated as a professional, Elviros mattress topper cover not only offers health and safety, but also keeps your bed clean more easily. No more worrying about spills, dust and dander!