The 40 oz Hydrapeak® Stainless Steel Insulated Tumbler With Handle and Straw Lid is your go-to companion for all-day hydration. With triple-layer, double-wall vacuum insulation, it maintains your beverages at the perfect temperature, keeping them cold for up to 30 hours and hot for up to 12 hours. Its spill and leak-resistant design ensures mess-free sipping, making it ideal for travel or outdoor activities. The tapered slim-base design fits snugly into most cupholders, offering convenience.