For that, I always reach for my Simple Modern Insulated Tumbler, which is made of stainless steel and keeps drinks cold for hours. I've been using this durable cup for seven years, and it's still ...

For me, my Owala tumbler is worth every bit of praise that it gets. I’ve had the 40-ounce stainless steel tumbler for around a year and a half, and it’s the only one I use exclusively at work.