The foldable water bottle is made of BFA-free food grade silicone for safe drinking. Silicone water bottles have excellent heat resistance and can withstand temperatures from -50 to 200. Indulge in hot and cold beverages. It can be attached to the pack with a lanyard when storing water. After drinking water, it can be folded and stored in a backpack. It is easy to carry and saves a lot of space. 3 15/64"W x 8 55/64"H