Travel Folding Water and Tea CupsProduct Details: This is a safe and healthy mug. Produced with food grade silicone. Excellent, elegant, practical design. Makes it easy for people to carry and is suitable for outdoor, travel, and meeting use. Can also be used as a practical cup at home Because it is made of soft silicone and you don't worry about it breaking The cup can be folded and adjusted. When folded, the height is only 6 cm. You can even put it in a pocket. When you expand it,