The Sigg WMB protective cover is suitable for all wide-mouth bottles with a capacity of 1 liter. The neoprene sleeve gives the drinking bottle a modern look. Additionally, it protects against cold hands when very cold beverages are poured into the bottle on hot summer days. Furthermore, the lightweight bottle cover impresses with its carabiner, allowing the drinking bottle to be easily attached to a backpack, stroller, or similar items. The cover is, of course, free from phthalates and estrogen-active substances. It is not suitable for Sigg Hot and Cold bottles.