These fridge bottles have a 100% stainless steel body and are ideal for homes and offices. The stainless steel bottle makes it safe and easy to store all beverages. Stainless steel bottles not only help keep your drink safe but also keep our planet healthy. Durable, light-weight and leak-proof - these are great to see, great to use and great for health. The bottles are stylishly shaded with colorful graphics. For your safety, Hot Muggs bottles use BPA free materials only.