Made of 100% Food Grade Silicon Health Materials. Folding Design Saves Space. the Silicon Material Feels Soft to the Touch, But It is Also Very Resilient. with a Slight Frosted Touch, It Can be Firmly Placed on the Desk Top & has Better Anti Drop Effect. Even If It Accidentally Falls to the Ground, There is No Need to Worry About the Water Cup Breaking. After Folding, It is About the Size of a Palm, Making It Very Convenient to Carry. Secure the Clear Transparent Plastic Cover to the Stainless Steel Metal Edge of the Large Folding Mug & Sip When Needed Without Worrying About Spilling the Beverage. Hang the Pocket Folding Cup on the Backpack Rucksack Strap or Pants Loop, Allowing Your Hands to Move Freely During Exercise or Travel. Minimum Quantity: 250