E! News Lists Simple Modern as One of the Best Ways to Stay Cool as it Gets Hot This SummerCool down as it heats up this summer with this list of great essentials — including a fan-favorite and longstanding Simple Modern go-to tumbler. Keeping your drinks cold for 24-plus hours is just what we do. E! Reviewers noted that Simple Modern's Classic Tumblers will keep drinks cold for hours, and highlighted that people like Olivia Culpo, Hannah Brown and Paige DeSorbo have all recommended these tumblers too!See the entire list of ways to stay cool if you're always hot here!