I tested 15 water bottles during a multi-week period before choosing the Hydro Flask Standard Mouth as a runner-up for the best overall. Here’s why.

For easy all-day hydration, reusable Hydro Flask water bottles are on sale thanks to Amazon's deals in a wide range of colors. You can save up to 31% on bestselling Hydro Flasks right now.

Hydro Flask 21 oz. Standard Mouth Water Bottle $34.95 at Hydro Flask; Hydro Flask 21 oz. Standard Mouth Water Bottle $20.00 at Walmart; Yeti Rambler 18 oz. Water Bottle.

HYDRO FLASK - Water Bottle 621 ml (21 oz) ... Our 710 ml standard mouth bottle will keep you well-hydrated throughout the day; 100% Customer and product satisfaction warranty: ...

The Hydro Flask USA Collection has two styles to fit your hydration needs, ... USA 21 oz Standard Mouth with Flex Straw Cap Standard mouth water bottle with the ease of a straw. $39.95.

Hydro Flask Wide-Mouth Vacuum Water Bottle With Flex Straw Cap 32 Ounce — $32.93 $44.95 (save $12.02) 40 Ounce Travel Tumbler - Sugar Crush Limited Edition — $29.96 $39.95 (save $9.99) ...

USA 21 oz Standard Mouth with Flex Straw Cap - $39.95. ... The wider opening makes for a faster fill and is compatible with Hydro Flask’s Wide Mouth caps and lids. More Shopping and Deals.