The Waterline thermos mug with a button and a convenient drinking spout is a great companion for trips, as the Guard fits perfectly in a standard car cup holder and is designed for one-handed use: it opens with just one button, without requiring any additional movements. Ease of use is not the only advantage of this model: the Guard is completely leak-proof, which is why it received its name, and it also keeps drinks hot for up to 12 hours, thanks to the reliability of the lid, double walls with vacuum insulation, and high-quality material - food-grade durable stainless steel SUS 304. Moreover, the Guard feels very pleasant to hold: the soft touch rubberized coating is velvety to the touch and looks interesting with any type of printing, thanks to its concise design serving as an ideal background for a logo. - convenient for one-handed use - completely leak-proof: your backpack contents are safe! - pleasant to the touch thanks to the soft touch coating - perfect volume - keeps drinks hot for up to 12 hours