How to Choose the Best Insulated Tumbler vacuum flask?
When selecting your tumbler, you have three materials to choose from: plastic, stainless steel or glass. All three versions are reusable, making them a smart alternative to disposable water bottles and cups, and they prevent condensation — no sweaty exterior or water rings.
Not all beverages are suitable for holding in stainless steel vacuum flask
Plastic: Plastic tumblers are double insulated with either air or foam between the two walls. Air-insulated options maintain your drink’s temperature for the shortest time (around two to six hours), yet they are significantly lighter than their stainless-steel counterparts.
Stainless Steel: Most stainless-steel tumblers are vacuum-insulated, with an airless gap between the inner and outer layer that provides the most effective heat and cold retention, maintaining your beverage’s temperature for up to 16 hours. In addition to being dishwasher safe, their metal construction is more durable and longer-lasting than a plastic tumbler.
Glass: Glass vessels are also a popular reusable drinkware option because, like stainless steel, glass keeps iced beverages cool for up to eight hours. Unlike steel, glass is fragile and requires a silicone sleeve or metal encasement to ensure it remains in one piece.
We’ve found top-rated insulated tumblers that go from summer to winter, car rides to outdoors and workday to happy hour. Head out for your everyday and extraordinary days with your essential cup of iced coffee, tea or sparkling water.
Tumblers are lightyears ahead of where they once were, keeping drinks at the perfect temperature, without condensation, and easy to carry or fit in your cup holders. If you’re in the market for upgrading your on-the-go cup, we’ll walk you through the best designs and our favorite picks.
