The Thermos 40 oz Stainless Steel Cup Holder Mug with Straw is designed to keep your drinks cold for hours and fit perfectly into your on-the-go lifestyle. Built from durable 18/8 stainless steel with advanced vacuum insulation, it keeps beverages refreshingly cold from your morning commute to your evening workout. The slide lock lid and leak-resistant straw gasket ensure spill-free sipping, while the Lumiview lid provides a clear view of your drink. Featuring a Griptec non-slip handle and base, it offers a comfortable, stable grip wherever you go. Designed to fit most standard cup holders and dishwasher safe for easy cleaning, this mug delivers convenience, durability, and performance in one sleek package.