Come and Check Our Branding Solutions.drinking straws are made of food grade 18/8 Stainless Steel, they are durable, reusable and no yucky metallic taste. Silicone Tips is made of food grade silica gel, BPA free, non-toxic and odorless. Silicone tips are good to pretect our teeth from the metal touch. Pls check inventory and detailed info before placing your orders.