保溫水瓶

I've been using this bottle for my morning coffee and it's still pleasantly warm by lunchtime, even in my cold office. The 500 ml size fits perfectly in my bag without being too bulky.

Took it on a long hike and the water was still ice-cold at hour 20, which honestly blew my mind for a 500ml bottle. The stainless steel finish feels really sturdy in hand, and the lid seals tight enough that not a drop leaked in my bag.

I was skeptical about the 24-hour cold claim, but after leaving this bottle in my car on a hot day, the water was still icy 20 hours later. The stainless steel feels really solid and the 500 ml size is perfect for my daily walks.