Now you can keep foods and beverages safer and healthier longer by utilizing Thermax Vacuum Insulation technology. Constructed from BPA free materials, TherMax Vacuum Insulation inhibits dangerous bacteria growth and keeps drinks cold and fresh for 12 hours. The stainless steel interior and exterior is unbreakable, the soft silicone straw is easy and comfortable to sip and the sweat-proof design won't leave water rings. Holds 12 ounces and is dishwasher safe. Ships in approximately two business days.