Waist trainers are everywhere, and so are big promises about what they can do. Here's an honest look at what a waist trainer is, what it can and can't do, and how to wear one comfortably and safely.
What Is a Waist Trainer?
A waist trainer is a firm compression garment, usually made of latex or neoprene with flexible boning, that wraps around your midsection. Some women wear them under clothes for a smoother silhouette, and others like the extra core support and warmth during workouts.
What It Can Do
- Instant shaping: while you're wearing it, it compresses your midsection for a smoother, more defined look under clothes.
- Posture reminder: the firm structure can remind you to sit and stand up straight.
- More warmth and sweat: the snug fabric holds in heat, so you'll sweat more around your core during a workout.
What It Can't Do
A waist trainer won't permanently change your shape or make you lose fat in one spot, and extra sweat is water, not fat. Real, lasting changes come from regular exercise, strength training, good nutrition and sleep. Think of a waist trainer as something you wear for shape and support, not a shortcut.
Choosing the Right Trainer
Fit is everything. Too tight and it will be uncomfortable; too loose and you won't get the support. Look for:
- The right torso length: a medium torso (about 9 to 11 inches) fits most women
- Strong, flexible boning so it doesn't roll or bunch
- Breathable lining for comfort
- Adjustable hook closures for a custom fit
How to Wear One Safely
- Start with 1 to 2 hours at a time and build up only as long as it stays comfortable.
- It should feel snug, never painful. You should always be able to breathe deeply.
- Take it off if you feel short of breath, dizzy, numb or have acid reflux.
- Don't sleep in it.
- Talk to your doctor first if you're pregnant, postpartum or have a health condition.
The Bottom Line
A waist trainer can be a fun confidence boost and a nice bit of support under clothes or during a workout. Pair it with a training routine you enjoy, like our beginner's strength training guide, for results that last.
Find your fit in our Shape & Recovery collection.
