I opened the box with the intention of using it, but ended up storing it without use, so the mattress and everything else are all unused. Please check the photos for the vinyl bag containing the mattress, as it has been partially opened. Microclimate-compatible system A microclimate-compatible fan motor installed at the foot of the air mattress draws in heat and moisture trapped inside the air mattress and exhausts it to the outside. This creates a constant and effective airflow, maintaining a more comfortable local skin temperature and humidity 24 hours a day. And this system provides consistent effectiveness even when the backrest is raised. Product Specifications ● Size / Width 90 x Length 192 x Thickness 15cm ● Weight / 6.8kg ● Materials / Air cell: Polyurethane film with embossed surface, Base sheet: (Side/Bottom) Nylon ox, Polyester mesh, (Anti-slip part) Polyurethane film laminated fabric, Head-up sensor unit, Fan unit (Case): ABS resin, Dedicated cover: Polyurethane film laminated fabric ● Power supply / AC100V ● Power consumption / 8W ● Maximum user weight / 140kg ● Standard functions / Microclimate-compatible function, Angle/Time management assist function, Quick hard mode, Easy mode, Power outage protection, Memory function ● Country of origin / Japan ● Antibacterial treatment, Waterproofing, Moisture permeability, Flame-retardant treatment, Stretch processing