64 ounces might sound like a giant water bottle and youre right. Its a lot of liquid. But, Ive been using a huge water bottle for years now and Ill never go back. Right now, Amazon has the black 64-ounce Hydro Flask Wide Mouth water bottle for just $29. Thats 54 percent off of its regular $65 price tag. I have never seen it this cheap, even on shopping holidays like Black Friday. This will likely sell out before it ends, so grab one. Hydro Flask Wide Mouth vacuum insulated stainless steel water bottle $29.61 (was $65)Hydro Flask This is the classic Hydro Flask, with its wide-mouth opening thats compabitble with flat and straw lids. I prefer the redesigned straw lid, though it does require regular cleaning if you dont want it to get full of scum. Its very durable, keeps drinks cold for days on end (if you use enough ice), and comes in a black color thats great for covering with stickers. Bring it to the gym. Keep it on your desk at work so the guy from HR can walk by and say, Whoa, somebodys thirsty! 40 oz. HYDRO FLASK Wide Mouth vacuum insulated stainless steel $28 (was $50)Hydro Flask If youre not ready for the 64-ounce monster of a water bottle, you can get a 40-ounce version in an awesome polished metal finish for just $28. I like this colorway a lot, so if you were thinking about buying me a gift for the anniversary of the first deal post Ive ever written, this would be a good one (hint hint).