30 Pack Aluminum Tin Jar are made Of Tin Plated Aluminum Screw-top lids of containers have no sharp edges. The multipurpose cans can used to storing candles as party favor,furthermore,it is an ideal gift, Used to store a wide variety of items like lip balms, cosmetics, sample pots, lip gloss and other art supplies. Convenient to carry: these jars fit seamlessly in your pocket, purse, handbag, backpack, or luggage.