SIGG Screw Top Black spare part – leak-proof cap for water bottles The SIGG Screw Top Black cap is the ideal spare for all SIGG bottles with a narrow opening or WMB bottles with an adapter. It has a simple handy design in black. The practical screw top is leak-proof. Thanks to its special design, the bottle can easily be held or carried with one finger – ideal for on the go. The screw cap is made of BPA-free materials and does not contain any pollutants, such as estrogenic substances or phthalates. The product details: Spare screw top For all bottles with narrow opening or adapter Leak-proof Hold and carry with one finger Free from pollutants Made in Switzerland