Our double-walled Sigg Hot & Cold Glass WMB bottles are made from heat-resistant borosilicate glass. The double wall provides improved insulation, keeping tea and coffee hot for longer, while also keeping beverages like fruit and vegetable juices cold for an extended period. The two built-in filters allow everyone to use the bottle according to their individual needs. The long filter is particularly suitable for loose tea, while the short filter is ideal for whole tea leaves or ginger slices. Both filters are easy to remove. The opening is compatible with all Sigg WMB closures.

The lid is lined with 18/8 stainless steel on the inside, ensuring that beverages only come into contact with stainless steel and glass. This prevents any alteration of the drink's flavor. Pure silicone is used as the sealing material. All materials are naturally BPA-free.