This is a watter bottle. It has rubber protective layer. It can hold 6mm ml water. Inner part of the bottle made of clear hard plastc. You can make the inner bottle out of glass. Outter part should be made of rubber materals. You can make the cap made of plastc or metal as you like. You can scale it as you need.

Custom size and design possible. You have to contact with me for more details.

Thanks,Mahbub