Airtight and leakproof: Screw lids provide an airtight seal to prevent leaks and preserve cosmetics, creams, and balms. Durable glass construction: Made from thick, high-quality glass to protect products from damage and contamination. Perfect for travel: With a 5ml capacity, these mini jars are ideal for carrying small amounts of cosmetics and lotions. Stylish black design: Elegant black lids add sophistication and protect sensitive products from light. Versatile use: Suitable for storing lip balms, waxes, oils, creams, and more, meeting personal and professional packaging needs.