There’s just nothing that beats a hot cup of coffee in the chilling winter days. What if the same coffee cup behaves like a heater? Well, this is exactly what “Brr” promises. Designed by Beata Faron, these set of heaters are made to let the hot cup insulate your hands. Made from wool, Brr includes two silicone bands inside that hold the cup in place. This interesting-looking design keeps the heat and warms frozen hands.