Package includes 36 pieces heart shape slime storage containers plastic boxes with lids. Heart shaped container storage capacity is 150 ml / 5 oz. Good sealability: Each container has a corresponding fit lid that can be well sealed and you don't worry about leaking, help store your slime for maximum freshness and organization, convenient to classify your various colors slime or foam balls. Made of recyclable PP material that is safe, non-toxic, drop resistance, anti-extrusion, stackable, washable and reusable, allow you to label and see all your slime easily. Wide applications: Suitable for organizing Valentine's slime, slime beads, foam balls or any other kinds of homemade trinkets, crafts, jewelry. etc.