4 Oz Clear Plastic Mason Jars with Ribbed Liner Screw On Lids - Clear Plastic Containers with Lids Wide Mouth BPA Free, PET Plastic. EcoQuality plastic mason jars are great for storing your favorite small baked goods, spices, herbs, and sorting items. Great for garages, bathrooms, or kitchens. Can be used for kids' slime, ingredients, dry food, and more! Highlights Top-notch quality: made of 100% pet plastic, these jars are bpa free and commercial food compliant. Comes with a ribbed screw-on lid for tight closure to ensure that your food stays fresh. Made in the USA: both the jars and the lids are made in the USA. support American-made jobs and products! Utilized by: great for homes, restaurants, baking pudding, arts & crafts, schools, and more! Has many uses for slime, baking, pudding, cakes, and more!