Beautiful flask made of high quality 304 grade Stainless steel ? Vacuumized and double walled for better temperature retention ? Keeps hot / cold for up to 6-12 hours! ? Slimmer version of Cola shape flask, also known as cola bottle ? Comes with a PU sleeve for carrying easily and enhancing beauty ? Beautiful design, easy on eyes ? Capacity: 500 ml (approx) ? Colours Available: Black and Silve