I used it once, but I'm selling it because I don't use it. There are only a few scratches from use, and it works without any problems. Size: 400ml Color: White Portable and Convenient: This cup is compact and lightweight, easy to carry, and can be placed anywhere, allowing you to enjoy cold drinks in the hot summer. It can quickly cool beverages/water, and the rapid cooling cup can cool faster than a refrigerator. With the CupCooler Long Resting Chilling Power, you can take it with you and enjoy ice-cold drinks wherever you go: the beach, pool, barbecue, lakeside, picnic, fishing, and other outdoor events. Our cooling cup can keep your drinks at the ideal drinking temperature, whether hot or cold.