The NoGoo® Platinum Cured patent pending non-stick containers are the solution to your sticky problems! The lids on the jars are specifically designed so that they stay together in your pocket. You'll be amazed at how well these work! Airtight and nearly indestructible make them great for storing concentrates. These concentrate jars are sold in packs of 5 7ml jars. Not only are these containers non-stick they are also shatter resistant, heat hesitant up to 450 degrees, made of food grade silicone, reusable, and freezer, microwave and dishwasher safe!