BPA-Free Silicone Material: Our coffee mug is crafted from 100% food-grade BPA-free silicone and PP material, meeting FDA food safety standards. It's non-toxic, odor-free, lightweight, and eco-friendly. The soft silicone cup easily folds and stands up when pulled up, making it easy to clean and dishwasher safe.How to Use: Simply move the white PP ring, open the lid on the white cap, pull up the mug bottom to stand, and open the cap on the top. To fold it after use, keep the lid on the cap open, remove the white PP ring, and push it harder from the bottom to restore the parts.Heat Protection: The white heat insulation ring provides a safe grip, preventing burns from hot water. Hold onto the PP ring for added cup rigidity.Food-Grade Material: This folding drinking cup is made from 100% reusable food-grade silicone, ensuring BPA-free and safe use. It's dishwasher and microwave safe, suitable for various beverages.