Maple Tree Tapping &ndash; Blue Sap Sack Collection Bags - Set of 12 Bags - Replacement Sap Saks Each food grade quality bag measures 12 wide by 24 deep Replacement bags for the Sap Sak Maple Tapping method. Blue color is UV protected. Each bag can hold up to 2 gallons of sap before being emptied Keeps dirt and contaminates out of the collected sap better than other methods Sack Sack Holders sold separately in complete kit. Happy Tapping!