The KeaBabies Prep Glass Baby Food Jars with lids are airtight and leak-proof, ensuring that food stays fresh and prevents spills while on the go! These versatile 4oz baby food containers are dishwasher-safe, freezer-safe, and microwavable, making it the perfect homemade baby food storage solution. 12-Pack, Durable 4oz Food-grade Glass Baby Food Jars - KeaBabies Baby Food Prep Jars check all the right boxes for reliable baby food containers. They are great for busy parents to prepare and store homemade food safely and smoothly. Food-grade and Safety-certified - Our baby food jars are free from harmful substances. The containers are safe for use in the freezer, microwave, and dishwasher. They are certified to be lead, BPA, phthalates, and PVC free. Airtight and Leak-proof - Each baby food container comes with a removable silicone o-ring around the lid to provide an airtight seal, keeping food fresh. No more worries about food leaks and spills. One Container from Prep to Serving - Our Food Prep Jars make food preparation, storage, and serving fun, seamless, and efficient. The containers are versatile for liquids, purees and snacks. Store, reheat, serve and feed your baby from one single jar. Perfect Portion, Smart Design - Our baby food storage jars come with clear measurement markings and writeable lids to help you portion the food correctly and label them. Its Smart Stacking Lid helps secure each jar from slipping when stacked.