Healthy Material: The foldable travel mug is made of food-grade silicone, guaranteed stainless steel rim and plastic lid. Easy to clean, odorless, stain-free, durable, flexible and reusable. The foldable mug can solve your drinking water problems. You can also cook hot drinks and heat food with the foldable silicone cup (such as coffee), because this material is resistant to high temperatures, so there is no need to worry about the cup structure being damaged. Ultra-thin folding design - Upgraded foldable design, space-saving, only 0.59 inches (about 0.59 cm) when folded, it is very suitable for putting into your pocket, purse, backpack, luggage, and does not take up space, which is very suitable for outdoor hiking, camping, travel and sports activities. It is also very convenient to clean. Just open it with a little water to clean. The smooth surface will not leave food residue. Perfect Performance - Can be hung on the bag with the hand rope and portable hook connected. - The measurement data inside the cup is easy to read. - It is easier to hold and drink from the stainless steel edge of the cup. - The tight-fitting lid prevents dust and dirt from getting close. The sturdy design guarantees flexibility and rigidity. The sturdy safety base and stainless steel ring make the cup comfortable to hold and safe to carry. Very easy to carry Capacity 9.22 oz (270 ml). Before folding, the top diameter is 3.74 inches, the bottom diameter is 1.77 inches, and the height is 3.35 inches. After folding, the height is only 0.59 inches, and the temperature range is -40F to 480 degrees Fahrenheit (21.4 degrees Celsius). Foldable small size, light weight, suitable for home and outdoor use. The folding design can adapt to almost any occasion, whether it is outdoor sports, indoor rest, concerts, sports fields, mountaineering, camping, cycling, travel, football field, etc. Easy to care The inner wall of the camping cup is smooth and not easy to stick. Just wash it under running water or put it in the dishwasher, and then air dry.