Product Description: : The collapsible travel mug is only 1.5cm tall when folded, takes up almost no space, perfect to store in your suitcase, backpack, bag and the included neck strap can be easily hung on to the backpack. Function: It is perfect for outdoor hiking, picnics, camping, travel and sporting events. You can put it in your pocket, backpack or purse without taking up space.   Features: Our collapsible silicone cups are very small and save space when folded. The collapsible silicone cup is made of food grade silicone, airtight ABS lid and stainless steel rim, easy to clean, non-toxic, odorless, flexible and durable, stain-free, reusable, BPA-free. Package includes: 2 collapsible silicone cups in blue and gray colors Main Points: 1. Product size is measured manually, there may be errors 2. Since different monitors display different colors, please refer to the actual color you received. 3.Please confirm the size before purchasing.