This is the cup that started the reuse revolution. Designed for drinking pleasure on the go, KeepCup was the world's first barista-standard reusable coffee cup, and has been embraced by reusers around the world. Use it and join the reuse revolution. Reuse it and change the world. Don't waste today. The KeepCup Brew Cork range is made from durable tempered glass with a natural cork band that is sustainably harvested from living cork trees in Portugal. It's available in standard coffee volumes for the perfect barista pour: XXS 04oz, XS 6oz/177ml, S 8oz/ 227ml, M 12oz/ 340ml, L 16oz/ 454m. Our products are designed to be modular, so that you can replace the part, not the product. For parts, more colour options or for product and care information, visit Keepcup.com.