SIGG bottles are legendary for their strength and durability. A classic alternative to polycarbonate or plastic bottles, they will carry your beverages through every adventure. Features: Seamless extruded aluminum for maximum strength; FDA-approved baked enamel lining. Inner coating is highly elastic; stays intact even if the bottle is dented or dropped. Coating is guaranteed to be taste-neutral and resistant to fruit acids and isotonic drinks. Leakproof top; compatible with all SIGG tops. Not to be used as a fuel bottle; freezing may rupture the bottle. Easy to clean. This product contains no bisphenol-A (BPA).