550ml Enough to Use---5 different colors of collapsible water bottle can be selected,, respectively, black, blue, orange, green, red, large capacity, colorful. Healthy & Safe Material--- Made of food-grade silicone, this bottle is certified for safe and odorless drinking. It's suitable for water or drinks from -40F (-40C) to 446F (230C). We don't recommend using it with liquids hotter than 140F (60C) to prevent scalding hands. Perfect for Travel & Sports--- This shatterproof, flexible, and durable collapsible silicone water bottle is equipped with an aluminum alloy carabiner. You can hook it to your backpack or gym bag for convenient carry everywhere. Ideal for travel, gym, biking, running, camping, fishing, hiking, climbing, yoga, beach, and outdoor sports. Leakproof & Easy to Clean---The travel water bottle is designed with a silicone seal ring to prevent leakage. Its wide-mouth design makes it easier to clean the interior or add ice or lemons. For first-time use, we advise soaking it in boiled water for 20 minutes for thorough cleaning. 550ml Capacity---You can choose from 5 different colors of collapsible water bottles, including black, blue, orange, green, and red. It's large-capacity and vibrant in color.