This maths-themed travel flask is a perfect gift for the accountant in your life! With an accountancy inspired print all around the travel mug and the text "Accountant - I hear invoices" on the front, this will be sure to make those hot drinks taste even better on the way to work ahead of a long day in the office! An ideal gift for yourself or for friends in the trade. Purely Home travel mugs are designed and hand-pressed in our UK studio using high-quality inks which will not fade. Whether you are buying this as a gift or for your daily cup of tea or coffee when out-and-about, our travel mugs are designed for the occasion and with love. This is a high-quality, stainless-steel double-walled tumbler with a vacuum seal. It's printed, packaged and shipped in a damage-proof box and sent from our UK production facility. Perfect for outdoor walks, picnics, hiking, camping and more!