Our Folding Travel Cup Are Made of Food Grade Silicon. Compact & Space Saving, Simple & Generous. for Safety Reasons, We Use Food Grade Silicon, Which Does Not Contain Pba, is Healthy & Eco Friendly, & Can be Disinfected at High Temperatures. It has Added an Anti Scald Ring. in Addition, It is Easy to Clean, Odorless, Durable, Flexible, & Reusable. Powerful Water Storage Space, Can be Large or Small, & Can be Easily Retracted. the Cup Cover is Made of Stainless Steel Metal, Which is Safer Than Similar Products on the Market. Perfectly Designed, Our Portable Silicon Folding Cup Comes with a Hook. It is Easy to Hang on a Backpack Rucksack & More Convenient to Carry. Minimum Quantity: 250