The Prep works by progressive cereal ProKeeper holds a full standard size box of cereal (approximately 11 cups, 3-quart capacity). it features a silicone seal strip for airtight storage, keeping cereal fresh longer. The flip-to-pour spout and contoured body make for easy one-handed use. It also has a wide mouth, for easy pouring of all types of cereals without any blockage. The clear body and engraved measurement markings make it quick and easy to see how much is remaining. The hinged lid flips to easily fit in dishwasher for convenient cleaning. This cereal ProKeeper is BPA-free and lead-free. Patent pending. For over 40 years, Our mission has been to create innovative kitchen tools and gadgets that make food preparation fun and fast while inspiring culinary creativity. From our thin store & trade; collapsible to our sophisticated pl8™ line, our dedication to providing quality products supported by superior customer service continues to drive our creative development today. At Progressive International, we continually strive to understand the needs of today; s cooks. Our team includes talented, energetic and passionate people committed to reimagining the kitchen. We strive to pass our passion on to our consumers through our thoughtfully designed tools, layered with our avid desire to go beyond the expected.