Extralarge 15 x 20 Commercial Size for industrial applications Superthick 5 mil bags offer the best protection and puncture resistance with no loss of freshness Black side protects items from light clear side allows for easy identification of contents Embossed side allows for easy conforming to contents as well as easy vacuum sealing Foodsafe 100 BPAfree Can withstand the temperatures and times necessary for sous vide cooking as well as freezer storage while preventing freezer burn