100% plastic Perfect Specifications:Food Storage Box consists of 10 transparent plastic with blue lids.Each size:( 5.32 x 3.93 x 1.93in,0.53 Quarts,500ML),which can meet your different needs,from storing fruits to preparing dishes. Easy to carry:Stackable,portable,reusable,and affordable way to prep healthy snacks for school,work,or on the go. Safety/Reusable/ Stackable:The container and the lid are made by BPA-Free and Food-Grade Safe PP materials.stackable in the freezer or lunch bag,easy to bring.Designed with kid-friendly lids that stay securely on Micro-wave oven & Dishwasher safe: Our plastic food containers with lidsare also made of anti-freeze and high-temperature materials.Freezers and microwave ovens can be used with confidence.Our products can be cleaned in the dishwasher,will not be deformed,and can be reused. WHAT YOU GET:10PCS 500ML Containers Transparent Plastic Storage Boxes with Blue Lids.