We tested this design in our travel mug review. If you don’t care for this feature, wide mouth Klean Kanteen bottles can also take the totally leakproof Cafe Cap 2.0 twist-open lid. The big loop lid makes it easy to carry with a few fingers or loop onto bags with a carabiner. This rugged Kleen Kanteen also held up well when we subjected it to our drop test. The wider mouth is a slight compromise in insulation, but for a smaller bottle you might not notice the difference since you’ll be refilling long before your ice is gone.Ī wide mouth, handy loop cap, good insulation properties and a clean design made the Klean Kanteen our top pick. The wide mouth of the 20-ounce made it easy to fill with ice and to drink out of, and its slim design made it easy to fit in cupholders and bottle compartments in most backpacks. Best stainless steel: Klean Kanteen – ClassicĬompare the best water bottles Insulated Stainless Steel BottlesĪfter testing a variety of sizes over the last three years, the best insulated bottle is from Klean Kanteen, either the 20-ounce wide mouth if you need a compact bottle or the 32 ounce classic if you want to keep beverages cold or hot all day long.

Of our five categories, we found the Klean Kanteen – 20-Ounce Insulated is the best water bottle due to its wide mouth, performance, versatility and sleek design. We spent several weeks subjecting 22 water bottles to rigorous testing that included washing, carrying, performing leak and stress tests - and, of course, drinking.

Iconiq water bottle