Dubblin Milk & Cookies Mug is made from 304 stainless steel. This double-walled non vacuum mug is designed for no sweat exterior and keeps your favorite drinks hot/cold. The lid has a slider cap console for easy sipping and silicon seal for spill proof. The mug comes with unique poem/rhymes design for your kids or a special gift for your little loved ones. Mug is 304-grade stainless steel that is rust-free and its plastic Lid is made of food-grade material and is BPA free. This mug is convenient to use, has a handle and is compatible with most single serve coffee machines. Amazing for Gifting.