Keeps drinks at the perfect temperature, 12 hours hot and 24 hours cold Foldable Spork Conveniently Fits In Lid Steam Release Button In Screw Tight Lid Hot or Cold Double Walled Stainless Steel Leak Proof Stainless Steel Lid Keeps Drinks At The Perfect Temperature Only used a handful of times. Nothing wrong with them, just don't use them anymore! Smoke free and pet free home. Don't forget to bundle and save!