This Silicone Folding Cup with Lids can be in direct contact with water.
It is made from safe and durable Eco-friendly silicone material. It is a non-toxic harmless, safe and environmentally friendly. Bringing your own coffee mug has been popular, and our products are professional coffee cups, not the insulation cup, nor is it a sports kettle.
It is anti-tear, flexible, not easy to deformation, and foldable. Also, has a spiraldesign with a sealed leak-proof ring, and can be closed with the cup body.