Fitbit may not have started the fitness tech movement, but it sure moved it forward.

While equipment like treadmills and stationary bikes are certainly based in technology (and there are advances in those devices on display again at this year’s CES), the field of wearable technology has been largely focused on fitness for years. But as it expands into other areas, it’s also doing more to help people who keep active.

The category has come under fire lately, though, amid questions of accuracy. The fitness tracker Fitbit, for example, is facing a class action lawsuit filed earlier this week over the accuracy of the heart rate monitoring technology in its devices.

Fitness technology is taking up a fair segment of the Sands Convention Center at CES 2016. From smart shoes that purport to advise you on your “foot strike zone” to a wearable that checks your pulse during workouts, here’s some of the new offerings on display.