Beckly Collapsible Roll Up Sports Water Bottle An air tight cap prevents spilling and included carabiner for extra convenience to carry it. It is an ECO-FRIENDLY silicone bottle, non-toxic and reusable. BPA free. This water bottle was made of silicone with leak proof. It has tough, durable and virtually unbreakable collapsible bottle. No need for big space- you can fold and rolls up when it's empty. It is "easy to clean" bottle. Top rack dishwasher safe.