The flour prokeeper features a silicone seal for airtight storage. The removable leveler snaps into the lid for easy storage. Measurement marks clearly display remaining flour. 4 qt (3.7 L) capacity Holds up to 5 lbs of flour with room to spare Hinged lid flips to easily fit in dishwasher Patent pending Materials ABS, SAN, PP, Silicone and Stainless Steel Care Dishwasher Safe