Health Materials The collapsible travel cup is made of food-grade silicone materials, with a stainless steel rim and plastic lid. Easy to wash, odorless, non-staining, durable, flexible, and reusable. Ultra-thin Folding Design and Portable The updated collapsible design saves space and measures only 0.59 inches when folded. It fits easily into your pocket, purse, backpack, or suitcase without taking up space, making it ideal for outdoor hiking, camping, travel, and sports events. Outstanding Performance This cup can be hung on a bag using the connected hand rope and portable hook. The measuring marks inside the cup are easy to read. The stainless steel rim makes it easier to hold and drink from. The tight-fitting lid helps keep dust and dirt out. Size Information Capacity: 9.22 oz (270ml). 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. The temperature range is from -40°F to 480°F. The compact folded size and lightweight design make it suitable for both home and outdoor use.