Do ankle weights really need to be smart? We tested some to find out.

By now, there’s a wise model of nearly each kind of exercise tools: treadmills, stationary bikes, kettlebells, boxing gloves, goggles, and even complete dwelling fitness center setups. Whether or not you need to monitor coronary heart charge, monitor energy burned, observe individualized exercises, obtain type cues, or compete with different exercisers, there’s in all probability a product on the market that’s appropriate along with your exercise of selection.

Now, ankle weights are anticipated to lastly enter the good tools enjoying subject. In fall 2021, Chinese language firm Sportneer — which sits on the intersection of sports activities and engineering — launched a Kickstarter marketing campaign for “The World’s First Sensible Ankle Weights.” The TrainNTrack ankle weights had been supposed to begin transport January 2022, however their Kickstarter funding was unsuccessful, so it is unclear what’s subsequent for them.

With a sensor that tracks movement and coronary heart charge, these weights look comparable to, however transcend, the normal wrap-around fashion of ankle weights, theoretically selling smarter, extra intentional coaching. Earlier than they’re launched to the plenty, I had the chance to check out the Sportneer TrainNTrack weights for almost two weeks myself, to decide in the event that they’re worthy of a wise improve. Right here’s the place my trial led me, and what potential patrons ought to contemplate earlier than buying:

The setup is pretty easy, with a number of kinks

Getting a pair of TrainNTrack ankle weights up and working is a fairly easy course of, assuming you will have the person guide helpful and are keen to spend a couple of minutes following it.


Because the weights arrive uncharged, step one is to cost them up utilizing a magnetic charging cable. (I’ll spare you the confusion that I confronted at this level by letting you already know that, though my set included two weights and two charging cables, solely one of many weights is “good” and may be charged. The guide didn’t make that very clear.)

As soon as charged, you then obtain the Sportneer app, create a login, and pair your weights to your telephone by urgent the button subsequent to the charging port. After you’re related, you’ll be able to then strap on the weights utilizing the buckles and Velcro, select an train program, and get to work.

The battery life is superb

A battery lifetime of 35 hours is spectacular, it doesn’t matter what system we’re speaking about. Though I didn’t use them for sufficient hours to confirm Sportneer’s declare, I can vouch for the battery’s beneficiant capability. I charged it up for a number of hours proper when it arrived, and didn’t see the indicator mild change from inexperienced (which alerts a full cost) over the course of a number of coaching periods. Theoretically, even if you happen to used the weights for an hour each single day, you’d have to recharge lower than as soon as a month. If solely telephones and GPS watches may maintain that form of juice!

The weights are constructed with high quality supplies

Simply holding the good weights, they really feel softer, smoother, and extra sturdy than conventional ankle weights. Whereas I’m used to ones with a scratchy exterior and inflexible form, the TrainNTrack weights function comfortable iron stuffing on the within and a composite Lycra cloth on the skin.

They aren’t designed for petite individuals

Sadly, I shortly bumped into the identical downside with the TrainNTrack good weights that I’ve with most of the good watches I’ve tested: the scale. I’m 5 ft tall with petite ankles and wrists, and these weights clearly had been designed with bigger individuals in thoughts.

When sporting them on my ankles, I both had to strap them so tightly that it was constricting, or accept a extra snug however much less safe match. (Most of the time, the weights slid up and down my ankle both means.) And neglect a couple of cosy match on my wrists, if I hoped to use them there too. The weights had been just too massive and rigid for my small arms, and I by no means did determine how to preserve them in place.

The smart weights don't fit properly on small wrists.

The good weights do not match correctly on small wrists.
Credit score: Sportneer

Not solely does the massive dimension distract from the exercise — particularly with fast and expansive actions like jogging, butt kicks, and leaping — however the poor match additionally makes the center charge studying much less dependable. In sum, due to my dimension, I didn’t really feel like I may maximize the advantages of the Sportneer good weights as a lot as a bigger particular person would possibly.

The performance-tracking know-how is spectacular

Earlier than I attempted out the TrainNTrack good weights, I used to be skeptical of the “good” element. Then once more, I hadn’t but heard of a six-axis gyroscope. Some research knowledgeable me that the know-how driving this product is a sensor with three axes that measure flip charge and three axes that measure acceleration. These sensors, I discovered, are additionally utilized in aircrafts, digital cameras, driverless autos, and navigation techniques. So would possibly they be a bit overkill for ankle weights? Positive. However at the very least they appear to be reliable.

The free app consists of coaching tutorials and a ton of knowledge to geek out on

I respect that the Sportneer app is free for all prospects and comes with a variety of coaching programs and workout routines from aerobics and arm shaping to squat coaching and indoor runs. When you resolve what you need to do, you merely press “begin exercising” and observe alongside as a private coach demonstrates the exercise. Whereas the coach does a very good job displaying what the train is meant to seem like, I’ve by no means been one for digital exercises, and this one was no completely different. (I’ll all the time desire studying one thing in particular person after which going for it alone over looking at a display screen and attempting to replicate what I see.)

It didn’t take me many exercises to arrive on the conclusion that the thought behind the Sportneer TrainNTrack ankle weights is intriguing, however in the end overkill.


The display screen additionally exhibits a timer, your coronary heart charge, and your coaching rating. Being a pure skeptic of arbitrary metrics akin to “exercise readiness” and “5K prediction,” I wasn’t offered by the coaching rating. All I learn about it’s that “the upper the accuracy, the upper the rating.” However I do respect the detailed abstract that follows every exercise and gives suggestions on coaching period, energy burned (which ought to all the time be taken with a grain of salt), and train precision. Accuracy apart, for many individuals, maintaining monitor of their exercises and evaluating one to the following can be an effective way to keep constant and motivated.

The expertise is considerably customizable

There are 4 completely different sizes of TrainNTrack good weights to select from: 2 kilos, 3 kilos, 4 kilos, and 5 kilos (every of which denotes the burden of a single unit). I used to be despatched a 3-pound set to strive—which was lucky, provided that the 2- and 3-pound units are for ankles that measure a minimal of 9.4 inches round, whereas the 4- and 5-pound are for 11.4 inches or extra. The utmost dimension for the lighter two units are 17.3 inches, and round 19 inches for the heavier two.

Sadly, the weights can not be interchanged, that means that whichever dimension you select, you’re caught with (except you resolve to improve). In an ideal world, you’d be ready to slip weights out and in so you might regularly enhance the load alongside your rising health.

Including to the customizable expertise, TrainNTrack weights may also be utilized in a conventional (not good) method. For those who crave a exercise with out the suggestions provided by the app, eradicating and changing the module from its slot is simple and fast, as illustrated by the person guide. Nonetheless, if you happen to suppose you might be doing that often, you must in all probability contemplate whether or not these high-tech weights are definitely worth the funding.

Buy or cross?

It didn’t take me many exercises to arrive on the conclusion that the thought behind the Sportneer TrainNTrack ankle weights is intriguing, however in the end overkill. Whereas nothing about it’s overly sophisticated, I discovered the entire course of to be extra tedious than crucial and would somewhat have simply strapped on some old-school ankle weights and gone to work with out fussing round with the app, the poorly-fitting weights, or the somewhat arbitrary metrics.

Possibly I’d have a distinct opinion if I had been a extra common person of ankle or wrist weights, or if I wanted assist in the consistency division. However as a result of weights like these won’t ever comprise the majority of my coaching, it’s exhausting to think about dropping a piece of money on extra tools that may largely go unused.

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