Stainless Steel Outer and Inner | Made With BevGaurd Technology | Screw-On Locking Müv Lid Made From Tritan Renew from Eastman | Easy Grab Handle | Keeps Drinks Cold Up To 6 Hours And Hot Up To 24 Hours | 16 Oz Brewing Capacity + 4 Oz for Milk or Cream | Pour Over Nesting Cup So You Can Brew Your Favorite Coffee Directly Into The Tumbler | Craft The Perfect, Single-Cup Pour Over Anywhere | Cup Holder Friendly | Meets FDA Requirements | BPA Free | Hand Wash Recommended