“Fits snug without feeling too tight. My stomach looks smoother, and the black looks good on its own.”
★★★★★
Instant shaping. Zero bulk.
FITFORM™ DEFINE
MEN’S LONG-SLEEVE COMPRESSION SHIRT
Look slimmer and feel more confident in seconds. Define flattens the look of man boobs and smooths your belly and love handles, with added back support and long sleeves for cooler days.
Get Rid of Dad Bod
Reduces Man Boobs
Smooths love handles
Promotes Weight Loss
In high demand—only a few left in stock!
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60-Day GuaranteeLove it or get your money back
Free ShippingOn orders over $50 / €50 / £40
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Product Overview
Product Overview
A long-sleeve compression shirt that flattens the look of man boobs and smooths your belly and love handles for a slimmer look under clothes. Added back support helps you stand taller, while flexible stretch keeps you comfortable through the day. Long sleeves make it an ideal layer for cooler weather.
Fabric: 90% polyester, 10% spandex—a stretchy blend for a snug, supportive fit.
Care Instructions
Care Instructions
Hand wash in cold water to help preserve the stretch. You can also machine wash cold on a gentle cycle. Do not bleach, tumble dry, dry clean, or iron. Hang to air dry to help maintain the fit and compression.
Sizing Information
Sizing Information
Fit Tips
Fit Tips
1. FIND YOUR SIZE
Check the size chart above to choose the right fit for you.
2. BETWEEN SIZES?
Choose the larger size for a more comfortable fit.
3. DON’T SIZE DOWN
Your tee should feel snug and supportive, not uncomfortably tight. A smaller size won’t give you better shaping.
If you prefer a gentler compression fit, we recommend sizing up.
Shipping & Returns
Shipping & Returns
Enjoy FREE Shipping in the US & Europe on orders over $50 / €50 / £40. If FitShort™ isn’t the right fit, you can return your order within 60 days of delivery.
FAQ
FAQ
Still have questions? Explore our complete FAQ section at the bottom of the page.
A better fit My confidence is back
Looking slimmer is just the start. Here’s how men feel wearing FitForm™ Define.
“Wasn’t sure what to expect, but I like it. Holds my belly in, and I can still move around fine.”
★★★★★
“The white one works great under my work shirts. Doesn’t bunch up, and my shirts fit better over it.”
★★★★★
“Wore it under my jacket on a cold day. Felt comfortable the whole time. Nice to have the long sleeves.”
★★★★★
“My button shirts sit better over this. Less belly sticking out, and I don’t feel squeezed all day.”
★★★★★
“Played basketball with my son in this. Could move just fine, and I didn’t have to keep pulling it down.”
★★★★★
“Thought I’d only wear it under other shirts, but it looks good by itself too. My wife even noticed.”
★★★★★
“Still got a belly, but it’s a lot less obvious in this shirt. Pretty happy with how it looks.”
★★★★★
“Sitting down is usually when my belly shows the most. This keeps it tucked in without digging into my stomach.”
★★★★★
“Sitting down was my biggest worry. It’s snug around my belly, but I can sit comfortably without pulling it down all the time.”
★★★★★
MADE FOR REAL LIFE
HOLDS YOU IN.
MOVES WITH YOU.
A smoother chest. Less belly showing. And stretch that lets you get on with your day. Define combines shaping support with a flexible fit, whether you’re sitting at your desk or heading out. Wear it solo or under your favorite shirts. Long sleeves add coverage for cooler days.
COMPLETE THE LOOK WITH FITSHORT.
Pair Define with FitShort for a smoother fit from chest to thigh.
WHY MEN CHOOSE DEFINE
Compression shouldn’t mean discomfort. Define smooths your chest, holds your belly in, and stretches with you.
| WHAT MATTERS | FITFORM™ DEFINE | CHEAP COMPRESSION SHIRTS |
|---|---|---|
| COMFORT | Snug support. Stretch to move. |
So tight you can’t wait to take it off |
| HEAT & SWEAT | Lightweight fabric for everyday wear |
Hot, sweaty, and sticking to your skin |
| STAYS IN PLACE | A longer cut for coverage |
Rolls over your belly. Pull it down. Again. |
| EASY TO WEAR | Flexible stretch for getting on and off |
A wrestling match just to get it off |
| VISIBLE SHAPING | Smooths chest, belly, and love handles |
All that squeezing. Barely any difference. |
Frequently Asked Questions
What size should I get?
Check the Define size chart and choose the size that matches your body weight. Between sizes? Choose the larger one. Define should feel snug and supportive. Don’t size down for extra compression.
Is Define hard to put on and take off?
Define fits more snugly than a regular shirt, so take your time putting it on and taking it off. Gently ease it over your shoulders, then smooth it down over your torso. Choose your size using the size chart—don’t size down for extra compression.
What will Define do for my belly?
Define uses targeted compression to smooth your chest and hold your upper belly in. The result is a cleaner shape and a better fit in your favorite clothes—without hiding under a bigger shirt.
Does Define help smooth my chest and love handles too?
Yes. Define’s compression helps smooth your chest, belly, and love handles for a cleaner fit under clothes. The shaping effect lasts while you wear it.
How do I keep Define in place?
Choose your size using the Define size chart and pull the hem down evenly. When wearing it under another shirt, tuck it into your pants to help keep it in place.
Can I wear Define on its own?
Yes. Define’s long sleeves and crew neck make it easy to wear on its own, with chest and belly shaping built in. Pair it with jeans or casual pants, or wear it under your favorite shirt or jacket on cooler days.
Will the long sleeves make me too hot?
The long sleeves add coverage, making Define a good option for cooler days. How warm you feel depends on the weather and what you wear over it. On warmer days, wear it on its own or with a light outer layer.
Will Define show under clothes?
Define fits close to your body for a smooth layer under button-downs, sweaters, and jackets. Thin or tight fabrics may show its texture. For a more discreet look, choose a slightly thicker outer layer with long sleeves.
How do I wash Define?
Machine wash cold on a gentle cycle, or hand wash. Hang dry to help protect the stretch and fit. Avoid the dryer.
Can I sit and move comfortably in Define?
Define’s stretch fabric moves with you while keeping your chest and belly supported. Choose the right size for a snug fit that lets you sit, bend, and move comfortably.
What if I choose the wrong size?
If the fit isn’t right, contact our support team—we’ll help you exchange it for the right size. Keep the tag attached when trying it on.