The Rumi Lota Bottle is insulated. It keeps contents hot for upto 12 hours and cold for upto 24 hours. The body of the bottle is sustainably made with stainless steel to reduce the wasteful use of plastic in carrying drinks. The bottle is easy to clean and meant only for hand washing. The sustainable materials used to make the bottle are food-grade, BPA-free and odor-free. It is made with steel strength that could withstand most drops.