bianli Outdoor Sport Drinking Water Bottle With Tea Filter 600ml/700ml/800ml SAFE MATERIAL: Suitable for both warm and cold beverages (-40 to 212 degrees Fahrenheit); wide mouth makes cleaning and adding ice cubes easy SAFE MATERIAL: Made of Polypropylene (PP): PP is a thermoplastic polymer. It is strong, tough, has a high resistance to heat and impact, not known to leach any chemicals that are suspected of causing cancer or disrupting hormones. TICK MARK: marked with milliliters for easy measurement CONVENINECE: Light Weight, Functional and Easy to Carry, Fits Most Cup Holders and Bike Racks