Do-Re-Tea Stainless Steel Tea Tumbler with Strainer 12 Oz, Leakproof and Insulated Tea Travel Mug, Slim and Stylish Design, with Filter EXCEPTIONAL QUALITY: Constructed of 18/8 food-grade stainless steel and completely leakproof, this tea infuser mug is really durable. FUNCTIONAL: Double-walled and vacuum-insulated to keep liquids piping hot or icy cold for over 6 hours. STYLISH DESIGN: Sleek, slim and lightweight tea thermos with shallow infuser in a fun, vibrant color that is easy to carry because of its contoured design. PRACTICAL: Removable tea filter for on-the-go tea drinking. Keeps tea leaves out of every sip. And the filter snaps in snug and secure so there are no loose components moving around when you're sipping from the bottle. MESS-FREE: Leakproof with a non-slip bottom makes using this travel mug a no-mess drinking experience. Carry it in your purse, backpack or briefcase with the peace of mind that nothing will escape this bottle.