Material: It is made of high quality stainless steel, which is safer and healthier. <br> Portable: Easy To Carry, easy to store and carry for outdoor picnics, camping, hiking, travelling, home and office use. <br>Reusable straws: Reduce environmental pollution caused by plastic straws and disposable straws to protect the environment and save Marine life. <br><br>Package Include: <br>4* Metal Reusable Straws <br>4* Cleaning Brush <br>4* Metal Case <br>4*Silicone Tips<br>4*Carabiner <br><br>Care Instructions: <br>① Boil the straw for disinfection before first use. <br>② Please do not use baking soda/bleaching powder to clean it. <br>③ If there have incrustation, use vinegar to clean it.<br>