Women's Health October 13, 2026 0 Comments

Why These On Train Tights with FormTec™ Are Shaking Up the Fitness World—And What Every Athlete Needs to Know Now

Have you ever found yourself wondering if there’s such a thing as workout leggings that actually get you? I mean, with nonstop city chaos, a packed schedule, and gym time feeling like the ultimate escape, finding activewear that doesn’t just look good but works hard alongside you is basically a modern miracle. After probably trying on a small army of athleisure pieces (some hits, plenty of misses), I finally stumbled upon the On Train Tights with FormTec™—and wow, talk about a game changer. These leggings didn’t just impress me on a quick jog or a fleeting stretch; they supported me through strength training, StairMaster sprints, and sweaty runs without ever losing their cool. Curious why these tights are swiftly becoming my go-to gear? Stick around—I’m breaking down exactly why they’re worth that coveted spot in your fitness arsenal. LEARN MORE.

3 min read

As a young professional living in a huge city, juggling dozens of tasks each day, my time in the gym is totally sacred. As such, I need performance wear—sports bras, workout tops, and training sneakers—that meets me where I am. I’ve been fortunate to test (probably) hundreds of pieces of athleisure at this point. And right now, only one pair of leggings that I own is unmatched when it comes to blending performance, style, and comfort: the new On Train Tights with FormTec™.

I tested the On Train Tights for a week, wearing them while strength training, walking on the StairMaster, and running—and I fell in love with them. Here’s why it’s worth adding to your activewear drawer.

Athletic person crouching, wearing black leggings, a tank top, and modern white sneakers with visible chunky soles.

Cori Vanderploeg

The fabric compresses and sculpts my legs, keeping everything locked in.

I don’t always like wearing high-waisted tights, but these are very flattering due to the compression of the fabric. On the StairMaster and during runs, they held everything in without feeling constricting; I almost felt like they were hugging my waist. Whether I was climbing another step, sprinting to break a mile PR, or lunging my way through a strength workout, the On Train Tights sculpted, shaped, and supported my every move.

White athletic shoes worn with black leggings and white socks, mid-air against a blue background.

Cori Vanderploeg

The On FormTec™ is compressive, but still soft to the touch; I’d wear this pair of leggings just to relax on the couch. Plus, with decently thick fabric, these will keep me warm on winter runs—and I can’t wait to sweat test them in cooler temperatures. Still, they were moisture-wicking and showed absolutely no signs of sweat, even when I wore them in hot, humid summer weather.

The high-waisted silhouette is flattering, but the waistband stays put.

The fabric doesn’t just perform—the actual design of the leggings also holds up. So many leggings tend to sag in the waistband or crotch area once I start moving, especially when they’re high-waisted, but not these ones. When I’m stretching, twisting, reaching, and sprinting, the On FormTec™ stays up and feels very secure. During runs, I never have to stop and readjust my bottoms.

Athletic woman in activewear leaping against a blue background.

Cori Vanderploeg

As a bonus, there are deep pockets on both sides of the tights; they hold my phone steady, but still make it easy to retrieve if I want to check the time or switch the song I’m listening to, unlike some other brands. However, the pockets are still decently large, so I could also fit my keys and a few running gels in there if I didn’t feel like wearing a running belt.

The tights move with me.

The stretchiness of the On FormTec™ can’t be denied. With an adaptive fit and precision-fitting support, the Train Tights shape every single step I take, whether I’m in the middle of a run or walking down the street. While so many leggings can feel too tight and suffocating, the ease, flexibility, and breathability of the fabric helps me reach PRs in the weight room effortlessly. Best of all, it helps me feel confident while doing so.

A person in activewear standing on one leg, holding a sneaker, with a blue background.

Cori Vanderploeg

I’d recommend this pair of tights for any woman who’s constantly on the go and looking for a solid pair of workout bottoms to support her every move. Whether you’re a power walker, heavy lifter, or marathon runner, these leggings will be with you each step of the way.

Photographed by Vanderploeg
Hair & Makeup by Mirna Jose using Danessa Myricks for See Management

Addison Aloian is the associate health & fitness editor at Women’s Health, where she writes and edits across the health, weight loss, and fitness verticals. She’s also a certified personal trainer through the National Academy of Sports Medicine (NASM). In her free time, you can find her lifting weights at the gym, running on the West Side Highway in New York City—she recently completed her first marathon, the 2025 New York City Marathon—and watching (and critiquing!) the latest movies that have garnered Oscars buzz. In addition to Women’s Health, she’s made an appearance on the Oprah Podcast and her work has also appeared in Allure, StyleCaster, L’Officiel USA, V Magazine, VMAN, and more.