Spiceberry Home Borosilicate Glass Storage Bottles 7-oz (200ml), Pack of 6 Jars Borosilicate Glass - Strong, light, heat-resistant. Same as the glass used in French Press Coffee Makers Measures 4x5-Inches (130x100mm), and holds 28 ounces (850ml) with the cap fitted. Bamboo cap has a silicone seal, making the bottles airtight, keeping the contents fresh. Modern, elegant design. Glass is heat Resistant, but not intended for stovetop use.