The Screw Top allows you to covert your Sigg bottle from a sports top to a leak proof bottle in one easy step. The screw top has an integrated seal which means that it won't leak, even in the most extreme situations. Ideal for when you want to keep your drinks bottle in your rucksack without fear of the contents getting wet.
Why buy a whole new bottle when you can just get an additional top to give you versatile hydration.
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