Dreamy Comfort Starts from Inofia Luxury Memory Foam Mattress Feature: ✔CertiPUR-US Certified, safely made without PBDE fire retardants, lead, mercury, formaldehyde, and other potentially harmful materials. ✔The breathable knitted fabric cover adds softness to the mattress while promoting airflow, creating a super comfort sleeping experience. ✔The super comfort foam layer can help relieve pressure on every part of your body and tiredness after a whole day work, at the same time, enabling you to sleep better. Easy to Set-up: 1. Place box onto a flat surface in your bedroom and carefully pull mattress out. 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. 3. Allow up to 72 hours for expansion to original shape and dissipate the odor. 4. Put the mattress on your bed and have a good night of sleep. Size Instruction: Twin size：75″ L x 39″ W x 12″ H Full size：75″ L x 54″ W x 12″ H Queen size：80″ L x 60″ W x 12″ H Warning: Keep distance and enough room to the mattress when opening, as it may have a risk to smack people when expanding. Care Instructions: ✘ DO NOT wash. ✘ DO NOT bleach. ✘ DO NOT tumble dry. ✘ DO NOT iron. ✘ DO NOT dry clean. ✔ Vacuum clean. ✔ Wipe clean with a damp cloth. Attention: Different people may have different feelings of firmness and softness, weight is also one the important factors. If there’s any question, feel free to contact us directly.