The Sigg Significant is an innovative sports bottle ideal for a whole range of activities. It features a new Active Top bottle-closure system, a pressure release valve and a pre-ventilation system. The integrated straw gives you easy access to your drink without having to lift or tilt your bottle. The new top is also leak proof even if you turn the bottle on its head which is great for all athletes drivers and kids. With this top having to unscrew your bottle is a thing of the past so you can simply reach for your beverage whenever you get thirsty without taking your eyes off the road and without the risk of spilling. Looks like the Swiss reinvented the water bottle. Well almost. Stay perfectly hydrated with the new SIGG Active Top collection. This 1-litre SIGG SIGGnificant aluminium water bottle has a highly resistant BPA and phthalate free lining making it almost unbreakable.