Our bowls are made from 100% natural coconut shells, they are handcrafted by artisans in Kerala. Each bowl is unique as they form naturally, natural grain of the coconut shell, texture and color variations, natural ridges, markings vary for each shell. HOW TO CARE FOR YOUR BOWLS -Hand wash with soapy water -Rub coconut oil on bowl every 15 uses -Only room temperature or cold foods in bowl, avoid hot food in bowl -Do not refrigerate bowl -Do not microwave bowl or put in oven Do not put in dishwasher