When it comes to portable water bottles, it’s not only what’s on the inside that counts but also the materials which define its functionality. Needless to say, not all water bottles are created equal. For reference, just have a look at this triple wall vacuum insulated option from Bear Grylls.
Dubbed the Bear Grylls Ultra-light Flask, each water bottle offers up to 24 hours of chilling insulation thanks to its triple wall insulated stainless steel construction. Such careful craftsmanship also keeps hot liquids steaming for up to 12 hours – a handy characteristic for any wintertime hiking expedition. These water bottles are also 20 percent lighter – weighing in at an incredibly lightweight 9.6 oz – boast a scratch-resistant and no-sweat powder-coated exterior, and are made from food-grade materials that won’t retain odors nor flavors from previous fills. Available now in either 20oz or 32oz options.
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