Come and Check Our Branding Solutions.The double wall insulation makes the Iron Flask sweat-free!It keeps your drink COLD for up to 24 hours,and HOT for up to 12 hours.Iron Flask comes with three different 100% LEAK PROOF lids.Carabiner Straw Lid with 2 Straws,Flip Lid,and a Stainless Steel Lid!*NOTE:The stainless steel lid is plastic from inside and stainless steel from outside*.The Iron Flask is made of 18/8 Stainless steel that is 100% BPA free and non-toxic.It will never leave a metal taste or rust.The powder coat exterior finish is a classic.It assures that you stand out with a very durable and elegant bottle.Our logo is now LASER ENGRAVED to assure the highest quality as well. Pls check inventory and detailed info before placing your orders.