We offer self-seal plastic cap salient features: 99.5% pure aluminium. theses bottles are with plug & self seal plastic cap – tear off model. Available finishes : frosted (for any size) shiny polished. (up to 1.35 ltr sizes) anodised (up to 5 ltr size) spray coated ( up to 5 ltr size) powder coated ( up to 5 ltr size)