This 40-pack of 4oz mini mason jars is perfect for so many projects! Each jar comes with black airtight metal lids that seal tightly to keep your contents fresh. The package includes everything you need: 40 glass jars, 40 black lids, 40 round blank labels, 40 square blank labels, and even a chalk marker for labeling. These little jars are incredibly versatile - use them for overnight oats, jams, jellies, honey, yogurt, smoothies, candies, or dry goods in the kitchen. But they're not just for food! They're perfect for DIY crafts, candle making, storing beads and supplies, organizing small items, or creating wedding favors and party gifts. Made from premium food-grade glass that's lead-free, non-toxic, and 100% recyclable. The glass is high-temperature resistant and dishwasher safe - you can even use them in the oven and freezer! The airtight seals with silicone gaskets ensure your items stay fresh and protected from moisture. They arrive well-protected in EPE cushion and carton packaging to prevent breakage during shipping. Whether you're a serious canner, craft enthusiast, or just need organized storage solutions, these mini mason jars deliver quality and functionality. The classic aesthetic design looks beautiful displayed in your pantry or craft room. They're reusable and eco-friendly, making them a sustainable alternative to disposable containers. The possibilities are endless with this generous 40-piece set!