Bust
Measure under your arms, around the fullest part of your chest.
FLASH SALE
3-PACK 53% OFF + FREE 14-DAY BURN PROTOCOL
FOR WORKOUTS, WALKS & EVERYTHING IN BETWEEN
ZIP UP. SWEAT MORE. FEEL IT WORK.
★★★★★ 4.6 · 50,000 + verified reviews
This zip-up vest traps your body heat around your core, so the same walk, class, or workout runs hotter, sweatier, and finally feels like it counts. Snug shaper fit that smooths and supports the second you zip it on.
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Select size
Please select a size to continue.
14-Day Burn Protocol
FREE · $50.00 value
✓ 30-day sweat guarantee✓ Machine washable✓ Sizes S/M – 4XL/5XL
Trusted by 2,000,000+ Kewlioo customers
★ 4.6 · 50 000+ VERIFIED REVIEWS ON THIS VEST
See the heat work
MORE HEAT. MORE SWEAT. MORE CALORIES BURNED.
Cotton TankHeat Escaping
THERMAL · 00:45 min
96.4°F
Cotton Tank
Sweat outputLow
Heat escapes. Core stays cool. Barely a glow.
VS
Zip Sweat VestHeat Trapped
THERMAL · 00:45 min
104.7°F
Zip Sweat Vest
Sweat outputMax
Heat held in around your core. Soaked by the end.
Same walk. Same 45 minutes. The only variable is what's holding your heat.
2 Million Strong
Join the women sweating harder in Kewlioo every day
2M+ HAPPY CUSTOMERS
Women who put in the work swear by it.
50 000+
Verified reviews
4.6★
Average rating
3×
More sweat per session
#1
Women's zip sweat vest
DM
I wear it on my morning walks and keep it on under my hoodie while I do the house stuff. First week I could wring it out — my walks finally feel like workouts.
PS
I expected a stiff wetsuit thing. It's soft, zips over my sports bra in seconds, and doesn't show under my sweatshirt. I sweat more in 30 minutes than I used to in an hour.
CR
Snug in a good way — it holds my core in and I stand taller in it. Got the 3-pack so there's always a dry one ready, and I like switching colors.
Real women, real sweat From 50 000+ verified reviews
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★★★★★Why body heat matters
More heat means more out of every minute.
3×
More Sweat
Trapped heat ramps your sweat response far past a cotton tank.
▲
Sessions That Count
A hotter core makes the same walk or workout feel and count like more.
♥
Better Cardio
Raised core temp pushes your heart rate and endurance.
⏱
No Extra Hours
No new routine, no added gym time more intensity from the movement you already do.
✦
Proof You Can Feel
Visible sweat is feedback the session actually worked.
↑
Stay Motivated
Feeling the work pay off is what keeps you showing up.
Your 14-day kickstart
Get the 3-Pack 53% off program included free.
One's on you, one's in the wash, one's dry and ready. At $18.66 a vest, the 3-Pack is the price most women pick in all three colors and the 14-Day Burn Protocol comes free with your order.
Choose your pack
Select size
Please select a size to continue.
30-Day Fit Assurance · Program emailed after purchase
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size and fit guide
Inches
CM
| Size | Bust | Waist |
|---|---|---|
| S / M | 30” | 24” |
| L / XL | 35” | 28” |
| 2XL / 3XL | 38” | 32” |
| 4XL / 5XL | 42 - 45” | 36 - 40” |
Runs Small. Pick 1 size up for extra comfort.
how to measure
1
2
Waist
Measure the narrowest part, around your natural waistline at belly button level.
Free with your order · $49 value
The plan that tells you exactly what to do with the heat.
No guessing, no app, no gym required. Fourteen short, sweat-focused sessions built to pair with your vest — quick enough to fit around work and everything else, so you stop wondering what to do and just start sweating with a plan.
- 14 daily workout cards — simple 20–30 minute sessions
- Home & gym options — train wherever you are
- Easy exercise swaps — adjust to your equipment
- Simple food checklist — no crash diet, no calorie math
14
DAY SWEAT
The 14-Day Sweat Guarantee
Wear it for 14 days. If you're not sweating harder than in your regular top, send it back for a full refund. Wrong size? Free exchanges for 30 days — no hassle.
Try it. Sweat in it.
Then decide.
Then decide.
Straight answers
Questions, answered.
Do I have to change my workout?
No. Walk, run, lift, or do your class the way you already do — the vest traps your body heat so the same session runs hotter and sweats harder. The free 14-Day Burn Protocol is there if you want a plan to follow.
Will it actually help me see results?
Results come from movement, food, and consistency. The vest makes every session hotter and more intense so the work you're already doing counts for more — and the shaper fit smooths and supports your core the second you zip it on.
Is it stiff or bulky like a sauna suit?
No. It's built to make you sweat, so it runs hot — but it's soft, flexible, and low-profile enough to wear under a hoodie or shirt without showing.
What do I wear it with?
Over a sports bra, tank, or thin tee. Most women wear it for workouts and walks, then keep it on under a sweatshirt for errands and chores to keep the sweat going.
Why the 3-Pack instead of one?
One gets old fast — one to wear, one in the wash, one dry and ready. The 3-Pack is the lowest price per vest and the only option with all three colors: Black, Heather Gray, and Red.
What size should I order?
This vest runs small — most women order one size up for the best fit. Sizes run S/M to 4XL/5XL, with free exchanges for 30 days.
Can I wash it normally?
Yes — machine wash cold, hang dry. No special care.
When do I get the program?
It is emailed to you right after your order is placed.
The fix isn’t more time
The problem isn’t your effort.
It’s your heat.
A cotton tank lets heat escape the instant your body makes it. Your core stays cool, your sweat stays low, and the session falls flat — even when you put in the work. The zip vest holds that heat in around your core. Same walk. Same workout. 3× the sweat — intensity you can feel and see.
Train hotter.
See it faster.
See it faster.
Last thing
You're already doing the work. Make it count.
Trap the heat. Follow the plan. Make the next 14 days the ones that finally show.
Get the 3-Pack+ Free Program→★★★★★ 50,000+ reviews · 30-Day Fit Assurance