This black Coffee Cup Sleeve is an ingenious new lightweight product that is thermal dynamically functional and environmentally friendly. This patented coffee cup sleeve fits all standard coffee convenience and cafe-sized coffee and tea serving paper cups. No need to throw away cardboard heat protectors, as this Coffee cup sleeve will not only provide heat protection but also the thermal dynamic sleeve will ensure your coffee stays hot for longer. The thin vacuum-insulated double-wall stainless steel sleeve is ideal for travel and fits conveniently into your vehicle's cup holder. This coffee cup sleeve will literally keep your coffee hot for longer as you are driving. Forget about those cardboard sleeves, enjoy the extra safety, while continually keeping your express store-bought paper cup hot for longer!