Yilove Collapsible Water Bottle BPA-Free Leak Proof,17 Ounce (Army Green) Made of platinum silicone,safe and healthy,durable and reusable. 17 oz capacity,BPA-free water bottle for kids. Unscrew cap,leak proof and spill proof collapsible water,keep your backpack dry even after vigorous outdoor activities,suitable for sports. Perfect for any season,protect your hands from being burned in summer,and can be taken as hand warmer in winter. Foldable water bottle,take up little space,convenient to carry.