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The Flex offers all the features you'd desire most in a fitness tracker while also being more attractive and more affordable than its competitors.

This is the one you’ve been waiting for. And it was worth the wait. Go get it.

A long list of features and a comfortable fit make Fitbit’s new Flex the best fitness tracker you can buy.

Fitbit has a winner with the Flex. It’s comfortable to wear, works very well and, at only $100, priced competitively. The Flex is the best Fitbit yet.

Those who already have a Fitbit or other activity tracking device might not be in a rush to buy another. But it’s an attractive, full-featured option for those in the market for an activity tracker.

Among wrist-worn activity trackers, the Fitbit Flex is the best and most competitively priced one you'll find. If you're not stuck on wearing a bracelet, though, the Flex's close cousin, the Fitbit One, is the obvious choice.

...I don't know why anyone would want to buy the Flex. It's inaccurate, has fewer features and is the least motivating activity tracker of those available today. To be honest though, if you're relying on a device or app to get you moving, then you've got a whole different set of issues to contend...

If you’re looking to get into wearables, that makes it a great place to start.

The Fitbit Flex matches the core functionality of the company's other socially-connected digital pedometers, but it's worn on the wrist. Its Bluetooth syncing and durability help it best competitors like the Jawbone Up.

If you've been monitoring the fitness-tracking space, but have been holding out for a band that offers just a little extra, then it's worth considering the Flex.

The band itself seems a bit chintzy but is infinitely adjustable for any size wrist ... The One is the undisputed activity tracker champion and this seems like a step in the wrong direction.

This unit is incredibly light, and the soft plastic is felt comfortable as we wore it around the booth for a few minutes. There isn’t much of a display on the unit, however, so the available information is pretty sparse.

All in all, we’re left with warm, fuzzy feelings about the Flex, and even though Fitbit is later to the market with it than Nike or Jawbone, the company appears to have learned from its forebears with elements like the battery-sipping LEDs and the water-resistance.

With many people keen to have the time displayed accessibly on their wrist, the FitBit Flex’s lack of time telling capabilities means users will have to double up their wrist wear in order to have the time at their disposal, an oversight that is sure to put many off.

The band itself isn't as discrete. It resembles a kid's rubber wristwatch and, to that point, it has several notches on its underside for a proper fit.