This collapsible water bottle is BPA-free and FDA-cleared. Safe and hygienic, because it uses food-grade liquid silicone bottle and food-grade plastic cap, children can also use it with confidence This product has excellent heat resistance and can withstand temperatures from -50 to 200C. It is leak-proof and impact-resistant, making it ideal for all activities and sports. It is tightly sealed even when squeezed or pushed. It won't leak even ina backpack or computer bag The 600mL portable silicone bottle is foldable. It utilizes the properties of soft silicone and can be folded and compacted after drinking, making it easy to carry The swivel cap is leak-proof, leak-proof and shock-resistant. It is tightly sealed even when squeezed or pushed Also suitable for camping picnics, mountaineering excursions, beaches, festivals, travel, hiking, outdoor recreation (such as running and transit) and other travel, fishing, fitness, gym, cycling, etc green