Made of BPA FREE food-grade platinum silicone,APPROVED to ensure safe drinking, non toxic and odorless. No taste or odor to provide you with a practical and safe drink bottle you can use every day.We do not recommend using it for liquid which higher than to avoid scalding your hand.foldable water bottle can reserve 500ml liquid with only 150g in weight. It can be folded from 9.8 inch to 5.5 inch in height. Collapsible and lightweight design allows you save 50% space, portable and easier to storage. Great for kids, girls, boys,women, men. Great for Traveling, Gym, Yoga, Outdoor Camping, Hiking, Cycling, Climbing, Skiing, Surfing.