3C4G Three Cheers for Girls "Summer Rocks" Collapsible Water Bottle Summer Rock water bottle holds 16 ounces and stands upright when full. Made of three layers of ultra-durable, strong, freezable and reusable high quality food grade BPA-Free plastic. Water bottle collapses and can be rolled, folded or flattened when empty, making it easy to carry wherever you go. Has a pop-up cap and includes a carabiner clip to easily attach to purse, belt loop or backpack. Easy to clean: fill with soap and warm water, shake and rinse thoroughly. Also, dishwasher safe on top rack. Summer Rock Collapsible Water Bottle is great for camp, school, sports or everyday use.