Thermoflask Double Stainless Steel Insulated Water Bottle with Two Lids, 40 Ounce, Capri

Product Information

Capacity: 1 litre (33.8oz) / Temperature test: 0 hrs 90°c, 90 mins 86.5°c, 4 hrs 81.6°c, 6 hrs 78.1°c, 8 hrs 74.7°c, 24 hrs 53.7°c / Plastic-free stainless steel and silicone construction / 18/8 food-grade stainless steel interior doesn’t retain or impart flavours / Integrated double-wall construction cup / Twist and pour cap with 360° pour-through design / Internal Thread Design for increased thermal performance / Durable Klean Coat finish. BUY NOW: KLEANKANTEEN.CO.UK When single-use plastics started getting a bad rap, S’well became the drinks bottle of choice for a host of celebrities and ‘influencers’. But they’re not all style over substance – the design consists of a triple-walled construction incorporating a copper layer for improved insulation. This flask is lightweight and practical – the ergonomic shape makes it easy to hold, the really wide mouth makes for easy drinking, filling and cleaning, and the grooved lid makes it easy to open, even if screwed on tightly. It’s sure to draw admiring glances if you leave it on your desk at the office. It’s just a shame that the capacity is a bit small, and it’s relatively expensive for a little flask. Full Specifications Like many reusable water bottles, such as the Hydro Flask 24 oz Standard Mouth with Flex Straw Cap and the Iron Flask 25 oz Retro Water Bottle, this ThermoFlask drinkware is made of 18/8 food-grade stainless steel. It is free from harmful chemicals and toxins, so it is safe for you to drink from. This material also doesn’t rust, so you can expect it to last for a long time with proper care.

Other useful design features to look for include a wide mouth, which makes for easier cleaning and filling (especially if you want to add ice cubes to your flask). In addition, many larger flasks incorporate ‘twist and pour’ spouts, so you can pour from the flask without having to completely remove the stopper. An integrated cup is also useful. Smaller flasks often feature lid designs that allow on-the-go swigging or one-handed operation. Flasks are more 'smell prone' than 'stain prone' – none of the flasks we tested had any staining after cleaning, but some retained a faint coffee smell.

The original and, judging from the results of our temperature test, still the best. This stainless steel flask is very durable, with a silicone base to protect against dents. The two-part stopper closes securely yet pours easily and has an integrated cup. In terms of outright heat-holding performance for up to 8 hours, nothing can touch the Ultimate Series. It was the best-performing flask we tested overall. It is relatively lightweight too. And if you’re concerned that the 500ml capacity will be too small, it’s worth noting that Thermos also makes a larger 900ml version. Full Specifications Capacity: 500ml / Temperature test: 0 hrs 90°c, 90 mins 89.3°c, 4 hrs 82.8°c, 6 hrs 79.2°c, 8 hrs 75.3°c, 24 hrs 50.9°c / Stainless steel interior and exterior / Cool-touch, no-slip finish / Protective silicone rings for ultimate durability / Two part stopper for smooth pouring. BUY NOW: THERMOS.CO.UK This water bottle and its lids are made of food-grade and environment-friendly materials, so it is safe for you and the planet.

None of the flasks leaked from the main body – however, some flasks can't be filled to their stated capacity without liquid coming out when you screw on the lid. Key attributes: Very light, design enables one-handed drinking, wide mouth for easy filling and cleaning.

Stanley Classic 25oz Bottle

Capacity: 600ml (20.3oz) / Temperature test: 0 hrs 90°c, 90 mins 79.6°c, 4 hrs 66.5°c, 6 hrs 58.3°c, 8 hrs 51.6°c, 24 hrs 22.2°c / Stainless steel construction / Wide mouth opening / Further, on the contrary, the Hydro Flask 24 oz Wide Mouth with Straw Lid is not suitable for hot liquids. The Wide Mouth with Straw Lid is not spillproof. This is where you get a win with ThermoFlask water bottles with straw lids, which are leakproof when appropriately closed.

Now, let’s talk about the differences. The price tag is one of the most obvious differences between the ThermoFlask 24oz Bottle with Chug Lid and Straw Lid, and the Hydro Flask 24 oz Standard Mouth. The former is a lot cheaper than the latter. To get maximum performance from your flask, you should always pre-warm it before use. Fill it with boiling water and leave to stand for five minutes or so before emptying and refilling with your chosen brew – such as tea, coffee, soup or hot chocolate. Filling your flask right to the top will also help minimise heat loss. Temperature Test: Method We hand-washed each flask with hot soapy water and let them air dry overnight, then ranked them on smell.We examined each flask and its pouring mechanism and attachments for faults. We penalised flasks that had faults affecting their usability. The ThermoFlask 24oz Bottle with Chug Lid and Straw Lid features double-wall vacuum insulation that maintains the temperature of your drinks all day long. Specifically, it can keep your drinks cold for up to 24 hours and hot for up to 12 hours.

Since the American manufacturer, Thermos, came to fame, the term has become slang for vacuum-insulated flasks. Although the terms are largely interchangeable, the original scientific phrasing is 'vacuum flask'. This flask has a familiar design with a classic ‘pop’ stopper that makes for easy pouring. With cheap, inferior flasks these are often prone to leaking but with this Outwell version the component seems well-made and reliable. It certainly didn’t leak on test. It’s a simple, inexpensive flask that makes use of a classic tried and tested design. The wide mouth makes the flask easy to fill and clean, while the cup’s plastic liner ensures you won’t burn your mouth. On the other hand, it is fairly bulky for a 750ml flask, with a small cup compared to some other designs. The external finish is also a bit slippery and prone to scratching. Full SpecificationsThe extra lid is great for keeping you cold drink cool. The chug lid does double duty: for post workout hydration it gets liquids in fast and makes sipping warm drinks without getting burned doable too. After some sessions biking, at the gym and by the computer it’s so far leak-free. Speaking of proper care, the ThermoFlask 24oz Bottle with Chug Lid and Straw Lid is easy to maintain because it is dishwasher safe. ThermoFlask recommends that you clean it after every use to maintain its pristine condition.