Promotional Hydro Flask - double walled mini flask (200ml) Double-walled mini thermos flask from Hydro Flask. The flask is made from high-quality stainless steel and finished with an attractive powder coating. Fitted with a plastic screw cap with carrying ring. The iconic Micro Hydro™ insulation keeps cold drinks cool for up to 7 hours and hot drinks warm for up to 7 hours. Leak-proof. Dishwasher-safe. Washing by hand is recommended to preserve the imprint. A compact bottle with a nod to minimalist design, designed for everyday use. Suitable for hot or cold water, but also ideal for an espresso or other drink on the go. Fits easily in the palm of your hand and is easy to carry in a coat pocket, bag or lunch box.