Promotional Eldur Stainless Steel Double Wall Tumbler - 530 ml Our 530 ml Double-Wall Stainless Tumbler is the perfect travel companion for enjoying your favourite beverages on the go. Crafted with a sleek stainless steel outer and inner, this tumbler features a double-wall construction that insulates both hot and cold liquids. The 530 ml capacity ensures you have plenty of your favourite drink, while the snap-on, spill-resistant thumb-slide lid with a rubber gasket provides added convenience and peace of mind. Thanks to advanced vacuum insulation technology, this tumbler keeps your drinks hot or cold for up to 6 hours. Plus, the non-slip bottom ensures stability, making it a practical choice for any adventure.