Insulated: The double-walled design with secure, insulated cap. Reusable: The reusable design is kind to the environment, reducing the need for single-use plastic. Material: Made from 304 stainless steel. Design: The lightweight design keeps your drink cold for up to 24 hours and hot drinks for up to 12 hours. Portable: Take anywhere when playing sports, work, travel, gym and more! Water bottle: Get a 500ml stainless steel insulated water bottle. 500Ml Insulated Water Bottle | Living Social | Living Social