Life in the kitchen is easier when you use the right tool for the task. Our sturdy glass cup is a great multi-tasker-use it for measuring, mixing, heating, melting and more. Designed for pouring, the flexible silicone lid prevents splattering in the microwave. It's also handy for storing leftovers. Part of our exclusive Open Kitchen collection, designed and developed by Williams-Sonoma. Made of strong, heat-resistant tempered glass. Includes a silicone lid for storage. Measurements are clearly marked in fluid ounces and milliliters. Microwavable and dishwasher safe.