Kellos 18 inch Air Mattress with ETL Certified Internal Electric Pump and Carrying Case Twin Core: 3" Core comes set Core: 3" Core comes set at 3" Product Type Desktop Document Racks & Sorters Horizontal & Stacking Desktop File Folder Sorter Type Horizontal & Stacking Number Of Compartments 3 Materials Steel Mesh Width 9 1 4" Depth 11 3 4" Height 8" For File Size Letter A4 Colors Black Load Orientation Front Compliance Standards GREENGUARD Certified Pre consumer Recycled Content Percent 0% Post consumer Recycled Content Percent 0% Total Recycled Content Percent 0% Special Features Three Tray Set our twin air bed with flocked top is puncture resistant and will hold up to movement around the home Everyone likes their sleep surface a little different and this twin size air mattress allows you to customize the firmness to your desired level