Material friendlythe foldable travel mug is made of food-grade silicone material, with a stainless steel rim and a plastic lid. The temperature range is from -40F to 480F, easy to clean, odorless, non-staining, durable, flexible and reusable. Portablefoldable design, saving space, only 1.5 cm thick when folded, very suitable for your pockets, wallets, backpacks, suitcases; Convenient lanyardEach cup is equipped with a lanyard for easy hanging. One end of the rope can be bound to the lid or the bottom of the cup. You can hang the cup wherever you feel fit. Light weighta folding silicone cup weighs about 75 grams, no more than the weight of a lemon, which will not add too much burden to your travel Multi-purposethe folding cup can be used at home or out, can be used to hold ice water, hot coffee and other beverages you like to drink