Flip Traveler - 12 oz.

3.0 • 2 Reviews

The Miir cup is the perfect blend of sleek design and everyday functionality. It keeps drinks hot (or cold) for hours, feels great in your hand, and doesn’t leak—a major win for commutes or travel. Plus, it’s sustainably made and supports clean water initiatives, so you’re doing good while sipping in style. Simple, durable, and thoughtfully designed—what more do you need in a cup?

I have Yeti and other water bottles but MiiR is my go-to bottle.i love the 16 oz size- it holds the perfect amount I need and the material isn't too heavy to put in my backpack or handbag. It keeps my tea hot for a full day out hiking, climbing, camping. When I make a new batch of tea at night, I'll always have hot - warm tea to sip if I am awake in the middle of the night. The design is simple and sleek. The only gripe is I wish the lid is a cup instead (like what I had in my previous thermos, a very common feature in Asian brands thermos) as it allows you to pour small amount of tea to drink off that lid-cup since it is too hot to drink directly from the bottle. Unfortunately after about a year use, the bottle does not insulate anymore. When I pour hot liquid into the bottle, the heat transmits onto the outside wall of the bottle rendering the insulation ineffective. I have two MiiR bottles and both lost their effectiveness over time. I was told by MiiR the insulation failed perhaps due to drops? I was a bit surprised since it's metal (not plastic) but i looked it up and here's one explanation: Vacuum flasks, also known as thermos flasks or insulated bottles, are designed to keep liquids hot or cold for extended periods of time. However, they can stop working effectively if certain factors come into play. Here are some reasons why vacuum flasks may stop keeping heat in: Compromised Vacuum: Vacuum flasks rely on a vacuum-sealed space between the inner and outer walls to minimize heat transfer. If the vacuum is compromised due to a leak or damage to the flask, air can enter the space between the walls