The double walled stainless steel in our larger bottle size will help keep liquids cool for up to 15 hours and warm for up to 8 hours. The front press button opening can be used with one hand to help with those big schoolyard thirsts and the integrated carry handle means it’s always on hand. The easy drink silicone straw offers free flow drinking and once done, click the lid back in place for leak free schoolbags. Insulating double wall stainless steel Dishwasher safe, top rack only Silicone straw top, offers free flow drinking Keeps liquids cold for up to 15 hours or warm for up to 8 hours Integrated carry handle 500 ml/12oz Made from stainless steel, polypropylene and silicone BPA, Phthalates, and PVC free To disassemble and reassemble your bottle for cleaning and care refer insulated drink bottle instructional video here To effectively clean your drink bottle remove the silicone straw top & straw stem and wash with warm, soapy water. Allow your straw top, stem, and other parts to dry completely before reassembling. Is your insulated drink bottle is leaking? Your insulated drink bottle is only leak-proof when the flip lid is shut, the straw itself is not leak-proof. So, it will leak if the lid is left open and the bottle is tipped on an angle or upside down. If it seems to be leaking when the flip lid is shut, try closing the lid slowly so you can ensure the groove inside the lid is matching up with the straw. It’s also a good time to check your straw top (mouthpiece) and straw stem are connected and inserted properly as shown in our insulated drink bottle instructional video here. Always make sure the straw top is pulled through all the way until it ‘clicks’ into place, and that the straw disk that sits under the lid is firmly pressed in place.