HYPERFlask offers a multi-layer design that has the same overall dimensions as a standard T175 flask but grows approximately 10 times as many cells. It has 10 equivalent layers or ‘flaskettes’, each containing a gas permeable cell growth layer, that are joined together to form a multi-layered cell culture vessel. It incorporates an air gap between each flaskette for gas exchange. Each flaskette is treated with the CellBIND Surface to promote cell attachment and growth.