Food grade silicone water cup with FDA certification. Safe and Reliable: leak-proof travel Mug , BPA-Free, no glue and recyclable. Large capacity 450ml + straw + leak-proof design. Compression and fall resistance coffee cup. [Detailed review] Heat insulation ring to prevent scalding; Carabiner, convenient for outdoor sports; cup lid to prevent water leakage; Good sealing, no need to worry about water leakage when inverted. [A Must-have for Travel and Outdoor] Convenient and portable as this collapsible coffee cup can be, you can put in a backpack or even a pocket, which will bring great convenience to your travel. Can be installed with water from -58F~ 392F, no fear of high temperature, safe and environmentally friendly All Products From Us Have Undergone Strict Quality Checks. If There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. We Will Give You The Best Solution.