Features Design, materials and features are exactly those you find in sports bottles, BYASI though is a tool case bottle.. BYASI features a standard 74 mm design and is compatible with standard bottlecages on the market. BYASI is made in a totally resistant material that safely protects from rain, cold but also high temperatures in the summertime. Includes a detachable internal container with a separator, very useful with smaller tools. Specifications Brand: Elite. Model: Byasi. Capacity: 600cc. Material: Plastic.