A practical tool and a water bottle. The design, materials and quality are just like a sports water bottle, but Byasi is first and foremost a container for your gear. Byasi guarantees maximum protection for your cycling gear thanks to the material that can withstand even extreme weather conditions. Material: Storage compartment: polyethylene - Closure: polypropylene. Diameter: 74 mm. Total height: 133 mm. Weight: 66 g.