ベルセルク

The lid fits snugly and the straw is sturdy, so I've been using it for iced coffee all week without any condensation issues on the outside. Even after sitting in my car for a few hours, the drink stayed cold, which is exactly what I needed.

I was worried about leaks since I use this for coffee on my commute, but the clear straw and lid combo are working out great. It keeps my iced drink cold for hours. Just remember it’s hand wash only — a small price for a tumbler this sturdy.

My coffee stayed piping hot during my whole commute, and the 20oz size is perfect for my morning refill. The straw is sturdy and the lid seals well enough that I can toss it in my bag without worrying. Just remember it's hand-wash only, which is a small price for how well it works.