Setup:Your Onyx Spring Foam Hybrid Mattress arrives conveniently rolled and boxed for easy handling and transport.1. Carefully unbox the mattress in the room where it will be used.2. Place the rolled mattress on your bed frame or foundation.3. Cut open the plastic packaging, being careful not to cut the mattress fabric.4. Unroll the mattress. It will begin to expand immediately.5. Allow the mattress to expand to their full size in just a few hours. While it may be ready to use sooner, for optimal performance and comfort, it is recommended to let it fully expand for at least 4-6 hours, or up to 24-48 hours.Compatibility:This mattress is designed to fit standard bed frames matching its dimensions.- Dimensions: H:200.0 x W:122.0 x D:30.0 cm. Ensure your bed frame or foundation can accommodate these dimensions.- It is compatible with most slatted, platform, or adjustable bed bases that provide even support.Care:Proper care ensures longevity and hygiene for your mattress.- Mattress Cover: The soft top cover is removable and machine washable for easy care. Remove the cover and follow the washing instructions on the label (typically a cold gentle cycle). Air dry or tumble dry on low heat.- Spot Cleaning: For minor spills on the mattress itself (if the cover is off), use a mild detergent mixed with water and a clean cloth. Blot the stained area gently; do not saturate the mattress. Allow to air dry completely before replacing the cover or using bedding.- Rotation: To promote even wear, rotate your mattress 180 degrees every 3-6 months. This helps distribute weight evenly and extends the life of the mattress.- Protection: Consider using a waterproof mattress protector to safeguard against spills and stains, preserving the mattress's condition.