SIGG Traveler Bottles have earned the highest rated sher gut (very good) in Germany's most authoritative environmental protection specialist magazine OKO-TEST. This eco-friendly bottle is designed to be safe and recyclable for people and the environment. The SIGG bottle is designed to keep you hydrated with water at room temperature. Before the throat is thirsty, you can get used to the way you drink it gently and slowly and your body absorbs moisture efficiently.