Drum collapsible water bottle can store up to 550 ml water, soft collapsible bottle design, makes it easy to fold to 40% its original size when empty making it compact and convenient to carry. Made of FDA Approved food grade silicone, leak proof and does not contain BPA. Comes standard with silicone band attachment, super lightweight, easy to clean ecofriendly and thermostable design. Able to handle hot or cold drinks from -30 to +160, wide size bottle mouth can easily fit ice cubes and fruits. BPA FREE, FDA certified