SAVE UP TO $5.20: Two sizes of the Owala FreeSip are on sale for 15% off during Amazon Prime Day. Get the 24-ounce version for $25.49 (normally $29.99) or the 32-ounce size for $29.79 (typically $34.99).
The best Prime Day deals on the Owala FreeSip:

When it comes to insulated water bottles, Mashable staffers’ loyalties are clear. We are not a house divided between Stanley and Hydro Flask. We are Owala FreeSip people.
I bought my own FreeSip because it haunted me at the gym. I couldn’t walk between the locker room and the Stairmaster machines without spotting a few nestled in cupholders. After using it for over a year now, I’m not shocked that it’s so popular: The FreeSip’s leakproof locking lid has a spout and a straw so you can drink out of it two ways, and it comes in a ton of cute color combinations. Mine is a lime green, orange, and yellow number that happens to look just like my parrot, Melon. I swear that wasn’t intentional.
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