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Vacuum flask Sigg 8997.90 — 0.55 L stainless steel, pink, 13h hot / 30h cold
SIGG 8997.90 is a 0.55 L stainless steel vacuum flask in pink, designed to keep beverages hot for up to 13 hours and cold for up to 30 hours. The flask weighs 300 g, has a slim profile (7.2 cm diameter, 265 mm height) and features vacuum insulation, an integrated tea filter and an anti-slip base. The drinking lip is made from taste-neutral Tritan and the cap can be opened and closed with one hand, offering spill-resistant transport for daily use, travel, office or outdoor activities.
The flask combines lightweight construction with improved capacity and enhanced insulation performance compared to earlier models. A 40% smoother screw cap and one-handed opening cap improve handling, while the built-in tea filter allows use with loose-leaf tea or fruit slices. The Tritan drinking lip does not affect beverage taste, and the anti-slip pad stabilizes the bottle on smooth surfaces. The product is BPA-free and made from high-quality 18/8 stainless steel for durability and corrosion resistance.
Preheat or precool the flask by filling it with hot or cold water for a few minutes and then emptying it before adding your beverage to maximise thermal retention. Use the integrated tea filter to hold loose-leaf tea or fruit slices; place leaves or slices into the filter, fill with hot or cold water and close the cap. Open and close the screw cap with one hand for convenient drinking. Clean the flask after use according to the manufacturer’s care instructions, paying attention to the drinking lip and filter to remove residue.
For best thermal performance, avoid overfilling and keep the cap closed when not drinking. Hand wash the flask components that include the drinking lip and tea filter; the main stainless steel body can be rinsed and wiped to preserve the finish and insulation properties.
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