[Environmental protection material] It is soft and comfortable, does not contain bisphenol A, food-grade organic silicon material, is healthy and environmentally friendly, is not easy to deform, and is easy to use.[Capacity and thermal stability] The maximum capacity is 600ml, which can withstand the temperature range of -58F to 392F.[Compact and stable performance] There is no need to worry about water leakage, falling, stability, and no tipping. There is a stable, insulated ring in the middle of the cup, which is non-slip, and there is no need to worry about burns.[Folding compression ring design] Folding creative design, light and easy to carry. The D-shaped suspension hole design is beautiful and easy to travel when hiking. It can be hung on clothes or backpacks. The lid of the cup is close to dust and hygienic.[Easy to use] It can be used as an outdoor portable drinking cup, a large-capacity cold and hot water storage cup for children's outdoor amusement, a portable compression cup for traveling and mountaineering, and a compression carrying cup for business and office. Repeated use, environmental protection, pollution-free, drinkable coffee, juice, tea, easy to clean.