A next generation multi-purpose double-walled vacuum sealed stainless steel drinking flasks – capable of storing your favourite beverage safely and securely. Made with 18/8 stainless steel – the highest quality steel used for food preparation, providing the flask with a lifetime of durability. This eliminates the need for plastic and glass, making the flask the ultimate eco-friendly bottle to ditch disposable and take the necessary step towards a sustainable future. The innovative double-walled vacuum feature has been designed to keep your beverage hot for up to 8hrs and cold for 18hrs, whilst effectively preserving the beverage’s freshness. Attributable to the stainless steel properties, each flask is made to be durable, rust proof and lightweight, making it easy for you to carry throughout all your daily activities and fit into any lifestyle.The engraving machine does have a 10% - 15% variation on engraving.