Double Wall Insulated: Keeps Beverages Hot Or Cold For Hours | | Leakproof: Lid Is Insulated, Bpa Free, And Prevents Leaks And Spills | | Two Mugs: 12Oz Mugs Are Double Walled And Thread Onto Thermos Bottle | | Durable: Stainless Steel Body And Sturdy Handle For Easy Pouring | | Limited Patent Pending | |