The Ball® pint size freezer Jars with snap-on lids are easy-to-use and ideal for freezer jam, freezing/refrigeration of leftovers, and storing fresh fruit & veggies. Use them for storage or portable lunch containers. Designed with EverSeal™ Technology, the flexible lid structure eliminates leaks, while the soft touch rubber makes it easy to put on and take off. Measuring & lines provide accurate portion control and help determine liquid levels for expansion during freezing. 100% BPA Free. Dishwasher safe on the top-rack.