The water bottle is BPA free and odorless, made of BPA-free food-grade organic silicone, passed LFGB, SGS and as obtained FDA certification, to ensure safe drinking, no PVC, latex, phthalate and plastic smell, etc. .Equipped with folding belt,it can tie the cup to 20% of the original size, difold bottle fits in your purse,backpack or suitcase,greatly saving space and convenient to carry.It has excellent heat resistance and can withstand temperatures from -50 to 200 degree. It has leak-proof and impact-resistant properties and is very suitable for all activities and sports. Even if it is squeezed or pushed,it will be tightly sealed.Even if you put it in a backpack or computer bag, it will not leak.Great gift choice.Custom with your logo today!