Double Stainless Steel: Our Insulated Travel Tumbler Is Made Of Quality Stainless Steel And Are Sturdy, With Double Insulation Design, You Can Keep Your Drink Hot And Cold For A Long Time, Both Children And Adults Can Use It Safely, An Ideal Companion For Hot Summer Or Cold Winter | | Leakproof Travel Coffee Cup: The Insulated Coffee Mug With Spiral Side Comes With Sealing Rings For Effective Leakproof Travel, You Can Shake The Mug As Much As You Like Without Worrying About Liquid Spilling Over And Wetting Your Travel Or Office Bag, The Travel Coffee Mug Includes A Clamshell Opening That Makes It Easy To Drink With One Hand, Whether You'Re Walking Or Sitting In The Car, The Size Of The Spout Ensures That You Will Not Get Spilled In An Emergency | | Non Slip Silicone Layer: The Bottom Of This Stainless Steel Coffee Travel Cup Has Silicone Pads That Help To Prevent It From Sliding And Keep The Furniture Away From Scratches, The Travel Coffee Cup Has A Silicone Layer In The Middle.