FitSlim ZipCore™
FitSlim ZipCore™
Eases Back Pain & Helps You Stand Tall
Smooths Your Waistline Comfortably
Hidden Under Any Shirt
Effortless 10s Front Zip. 0 Struggle
CoolBreath™ Fabric. Stays Dry All Day
Anti-Roll Hem Technology. Never Rolls
-
My back finally stopped hurting. I wear it every morning. I feel like myself again.
-
I wore it under my blouse at my granddaughter's wedding. Nobody knew. I felt amazing.
-
The zipper makes it so easy to put on. My arthritis doesn't stop me anymore.
Wrap the tape around your waist
Measure just above your belly button, keeping the tape snug but not tight. That number in inches is your size. For best results, measure over your undergarment.
| Size | Waist (inches ) | US Dress Size | |
|---|---|---|---|
| M | 28" – 30"71 – 76 cm | 8 – 10 | |
| L | 30" – 35"76 – 89 cm | 12 – 14 | |
| XL | 35" – 40"89 – 101 cm | 16 – 18 | Most ordered |
| 2XL | 40" – 45"101 – 115 cm | 20 – 22 | Most ordered |
Couldn't load pickup availability
Guarantee 100% Satisfied or Money Back
The #1 Choice for Women 60+
90-Day Risk-Free Guarantee
Free & Easy Size Exchanges
90-day Guarantee
90-day Guarantee
Try the FitSlim ZipCore™ with complete peace of mind. If you are not completely satisfied, you have 90 days to return them for a full refund. No stress, just the certainty of a purchase you can trust.
Free Size Exchange
Free Size Exchange
Not the perfect size? We’ll exchange it quickly and free of charge. Because confidence starts with the right fit.
How does the zipper work?
How does the zipper work?
The full-length front zipper runs from the waist to the chest. Simply unzip, step into the tank from the bottom, pull it up, and zip. No lifting your arms above your head. No contortions. Takes under 10 seconds — even with shoulder or back pain.
Materials & Care Instructions
Materials & Care Instructions
- Composition: 88% nylon, 12% spandex
- Washing: machine wash at a maximum temperature of 40°C
- Care: Do not bleach, do not iron, do not dry clean
You're Not Alone.
Thousands of Women Feel Exactly This.
"My back hurts the moment I get out of bed."
That dull, nagging ache that follows you all day — sitting, standing, walking. You've tried everything. It never fully goes away.
"I avoid mirrors and stick to baggy shirts to hide my belly."
You used to dress with confidence. Now you grab the loosest shirt in the closet — hoping nobody notices what's underneath.
"I look in the mirror and I don't recognize the man I used to be."
Rounded shoulders, a hunched back, a belly you can't hide — it adds years to how you look and feel. Standing tall again isn't just about posture. It's about feeling like yourself again.
If you nodded at any of these — the FitSlim ZipCore™ was built for you.
The Secret Behind Women Who Look 10 Years Younger.
It's not a diet. It's not surgery. It's one zip. The FitSlim ZipCore™ straightens your back, smooths your belly, and hides under any shirt — in 10 seconds flat.
Why Women 60+ Choose FitSlim ZipCore™
Not all compression tanks are created equal. Here's how we compare.
|
Others | |
|---|---|---|
| Front zipper (easy on/off) | ||
| Back posture correction bands | ||
| Anti-roll hem (stays in place) | ||
| Cooling / breathable fabric | ||
| 100% invisible under clothing | ||
| Designed for Women 60+ | ||
| 90-Day money-back guarantee |
Built Different. Built for You.
Your body enhanced, naturally and without constraint by our ZipCore™ Patented Technology
Frequently Asked Questions
Is the zipper easy to use if I have arthritis or stiff fingers?
Is the zipper easy to use if I have arthritis or stiff fingers?
Yes. The zipper pull is large and easy to grip, specifically designed for women with reduced hand dexterity. The glide is smooth and requires minimal force. Hundreds of our customers with arthritis report being able to put it on completely independently for the first time.
Will it be visible under my dress shirts or polos?
Will it be visible under my dress shirts or polos?
No. The seamless construction and flat zipper profile make it completely invisible under any garment — dress shirts, polos, even white t-shirts. The fabric is thin enough to add zero bulk. Hundreds of our customers wear it daily to the office, to church, and to social events without anyone noticing.
How quickly will I feel a difference in my back?
How quickly will I feel a difference in my back?
Most customers report feeling a noticeable difference in posture and back comfort within the first few hours of wearing it. The X-shape tension bands provide immediate correction. For lasting improvement in muscle memory and posture, we recommend wearing it consistently for 4–6 weeks.
What size should I order?
What size should I order?
Measure your chest at the widest point. If you're between sizes, we always recommend sizing up for maximum comfort. We offer free size exchanges if the first size isn't perfect.
Can I wear it all day without overheating?
Can I wear it all day without overheating?
Absolutely. The CoolBreath™ ice-silk fabric is specifically engineered for all-day wear. Most of our customers wear it 8–12 hours a day. We recommend starting with 4–6 hours and gradually increasing to let your body adjust to the posture correction. You will not sweat through your shirt.
What if it doesn't work for me?
What if it doesn't work for me?
You're covered by our 90-day money-back guarantee. If you're not completely satisfied for any reason, call us at (404) 458-0961 or email us and we'll process a full refund within 3 business days. No return shipping required. No forms to fill out. Just a simple phone call.
FitSlim arrives in New York – Experience it live!
Fitslim is opening its very first popup store in NY!
This is your unique chance to discover our ZipCore™ tanks and shirts in person, try them on, and enjoy personalized advice from our team.
-
Trusted by 10,000+
Used daily with confidence
-
Winter Sale Now
Up to 50% OFF
