700ml Rhombus Folding Cup made of Platinum Silicone, a cross-border pocket portable water bottle for outdoor sports. It is crafted from food-grade silicone, PP, aluminum buckles, 304 stainless steel and PP materials. In-stock colors include blue, dark gray, orange and purple, and color customization is available for large orders. This portable water bottle is easy to carry and suitable for various occasions such as outdoor sports, gym workouts, running, travel and other trips.