<b>Food grade silicone which can be used between -104℉ and 392℉. Food grade silicone sleeves, feel safe to use them.</b><br/> <br/> <br/> Purchase a set of silicone tip for kids drinking to protect your teeth when you drinking with stainless steel straws softable touched safe and comfortable divided drinkware for family members ,one person a colors<br/>  <br/> <br/> suitable for metal straw with outside diameter of 6mm(0.24") and other materials, it is very important for your health because it is easy to carry and you can use it in any situation<br/> <br/> <br/> eight kinds of color yellow, dark blue, red, purple, green, pink, light blue, orange there are three of each color save one for your family of each color and the rest you can give to your friends because health is the best gift<br/>