Promotional 310ml Double Wall Vacuum Flasks manufactured from PP, silicone and stainless steel in a modern design with sleek lines. Printed with your company message or logo for a practical advertising opportunity. These personalised insulating flasks will help maintain the temperature of your favourite beverages for longer, all while keeping your brand on display with every sip. Top-rack domestic dishwasher safe.  Additional print colours available, subject to sight of artwork.