Polyester Imported BASSINET FOR TWINS: Mesh sides and walls offer maximum airflow (and visibility) and allow your twins to sleep closely, while providing a safe, separate sleep space for each baby ; Slim base with wheels easily slides under your bed, sofa or chair ADJUSTABLE HEIGHT: 5 adjustable heights allow you to pick the height that works for your bed clear view AMPLE STORAGE: Large storage pockets provide space for burp clothes, small toys or pacifiers COMFORTABLE MATTRESS: Bassinet includes 1" Thick Mattress with removable sheets that can be machine washed SAFEST CHOICE: JPMA certified to meet or exceed all safety standards set by the CPSC & ASTM ; Assembled dimensions: 30"L x 30"W x 32.5"H-38.25"H