LuvLap Steel Straw Sipper Cups are for ideal for baby and Toddlers' liquid consumption. The Double Walled body retains the temperature of liquid for long duration. The straw of the sipper is made of food grade sterilizable Silicone. The starw is byte resistant. The body of the sipper is made of rust free SS304 steel. It is odour free also. The detachable handles are very easy to grip.