Stainless Steel Collapsible Mug Description Health materials: This folding cup is made of high quality stainless steel, will not break, safe and healthy, durable, easy to clean, and has a long service life and is reusable. Foldable design: The cup is foldable design, which saves a lot of space and is convenient for travel, creative and practical. Fits well in your pocket, purse, backpack, suitcase. Convenient to carry: Comes with a loop for easy carrying. You can easily enjoy coffee, milk tea, wine, etc., an ideal travel companion. Ideal for outdoor hiking, camping, travel and sporting events. Application of use: The collapsible cup is suitable for camping, hiking, mountaineering and other outdoor activities. This collapsible water mug is a must have for the busy traveler.