The Progressive ProKeeper+ 4-Piece Airtight Pantry Storage Set boasts superior construction and a silicone seal that ensures airtight storage. Its stainless steel clasp also guarantees ingredient longevity. The four containers are designed to sustain the freshness of their contents for extended periods. Additionally, each canister features measurement markings to provide a clear view of its internal contents. The set includes a Large 2.5qt Container, Two Medium 1.5qt Containers, and one small 0.7qt Container, all with stainless steel hinges that swing open for easy filling and measuring, an easy-catch latch to secure the lid, and are BPA-free. Furthermore, the ProKeeper food storage containers are dishwasher safe for effortless cleaning.