Come and Check Our Branding Solutions.insulated tumbler is made of kitchen-grade 18/8stainless steel instead of common brittle glass, BPA Free, Lead Free, easy wash, more durable than other ordinary glasses.Electro polished inside delivers elegant look. Designed for car cup holders.Our water bottle uses food grade silicone makes sure the sealing tightness and leak proof.Steel flask is designed to reduce spills and sloshing,pack your flask in your school bag, Pls check inventory and detailed info before placing your orders.