Come and Check Our Branding Solutions.It is made of food grade double walled stainless steel which is SUS304# inside and 201# outside. the volumn is 8.1oz/240ml. We have another option volumn 11.83oz/350ml. It is crown shape lid. The lid can be used as a cup to drink water. It is convenient to use when you are traveling, driving and making sports. Can keep liquids warm or cold for long time. Your logo and company name can be imprinted on the bottle for promotion. Pls check inventory and detailed info before placing your orders.