The SIGG Hot & Cold is a beautiful insulated bottle with a minimalistic design which can easily be shown off in the office during the week. And itll still be at your side as you head out for adventures at the weekend. Whatever the case may be, the double-wall vacuum insulation ensures that drinks keep their temperature for a long time - hot or cold! Sigg has also put in little something for tea lovers: a removable tea filter in the large 0.5l SIGG Hot & Cold. Suitable for use with both tea leaves or tea bags, its also easy to remove and clean quickly."