<br><b>Main features of Inofia adaptive mattress in a box</b> <br><br><b>Balance and Support</b> - Inofia mattress strikes the perfect balance between firm and plush, it's just right for sleepers of all shapes,sizes and comfort preferences. <br><b>High Quality Foam</b> - CertiPUR-US Certified, safely made without PBDE fire retardants, lead, mercury, formaldehyde, and other potentially harmful materials. <br><b>Breathable Soft Knitted Fabric Cover</b> - The top cover is made of super breathable soft knitted fabrics, help absorb moisture and regulate temperature. <br><b>Non-slip bottom</b> - The solid-quality cotton blanket and strong non-slip bottom polyester fabric cover ensure the ultimate support of the whole mattress. <br><br><b>Easy to Set-up:</b> <br>1. Place box onto a flat surface in your bedroom and carefully pull mattress out. <br>2. Use the special case unpacker attached in the package. Do not use other knife or scissors in case of damage. Roll out the compressed mattress onto a clean flat surface. <br>3. Allow up to 72 hours for expansion to original shape and dissipate the odor. <br>4. Put the mattress on your bed and have a good night of sleep. <br><br><b>Warning:</b> <br>Keep distance and enough room to the mattress when opening, as it may have a risk to smack people when expanding. <br><br><b>Get the right size at the first time:</b> <br><br><b>8 inch:</b> <br>Twin size：75" L x 39" W x 8" H <br>Twin XL size：80" L x 39" W x 8" H <br>Full size：75" L x 54" W x 8" H <br>Queen size：80" L x 60" W x 8" H <br><br><b>10 inch:</b> <br>Twin size：75" L x 39" W x 10" H <br>Twin XL size：80" L x 39" W x 10" H <br>Full size：75" L x 54" W x 10" H <br>Queen size：80" L x 60" W x 10" H <br><br><b>12 inch:</b> <br>Twin size：75" L x 39" W x 12" H <br>Twin XL size：80" L x 39" W x 12" H <br>Full size：75" L x 54" W x 12" H <br>Queen size：80" L x 60" W x 12" H