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S-7XL
Model is a size 34D, and wears Medium
UNDR Core+Full Support Jelly Bra
The UNDR Core+ is for women with a fuller bust who gave up on wireless
- Feel supported for 12h+
- Feel held without an underwire
- Take the weight off your shoulders
Fit GuideUnsure which size to choose?
SmallTrue to sizeLarge
100%Fit Promise
Perfect Fit Guarantee
Free size exchange with no exotra cost & return needed.
Free Shipping over $60Secure CheckoutEasy Returns
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JELLYSUPPORT™ TECHNOLOGY360° support for lift, shape, and stability, without the rigidity of an underwire.
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FULL-COVERAGE SUPPORTCoverage extends from front to sides, keeping the bust secure and comfortably in place.
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SEAMLESS & BREATHABLEA smooth, invisible finish that stays hidden under any outfit and keep you confident all day.
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Natural LiftLight foam padding enhances your shape with a subtle lift without the push-up feel.
FEATURES
- JellySupport™ Technology
- Wide Support Straps
- Molded 3D Cups
- Full Coverage
- Seamless & invisible
- V-Neck Mesh Panel
COMPOSITION
- Nylon
- Elastane
SUPPORT LEVEL
Extra strong
Designed to fit true to size, with support for D to G cups.
Not sure which size is right for you? Our sizing tool makes it easy to find your best fit.
Care Instructions
- Hand wash cold recommended
- If machine washing, use a laundry bag and gentle cycle
- Wash with similar colors
- Do not bleach
- Do not iron
- Do not tumble dry
- Air dry flat
- Avoid high heat
10.000+ happy customers
See all reviewsDESIGNED AROUND YOUR BODY
UNDR THE COMFORT YOU CAN FEEL
JellyLift™ W-stripFlexes with youFINALLY NO MORE WIRES
After years and years of uncomfortable underwire, a bra you can finally wear all day.
The W-shaped JellySupport™ holds your fuller bust without a single wire, no poking, no digging.
Wide Support StrapsMolded 3D CupsHeld, Never Squeezed
Strong support usually means being compressed. JellySupport™ holds a fuller bust without pressing it flat.
ANTI SAGGING SUPPORT
Because of age, a baby or a few pounds lost, your bust loses its perk, most bras don’t lift it back up enough.
Our molded 3D cups lift from underneath and along the sides, and hold it up beautifully all day.
JELLYSUPPORT™ TECHNOLOGY
Support that moves with you
We developed JellySupport™ because the support you need shouldn't come at the cost of all-day comfort
01 What is different?
Traditional underwires rely on rigid pressure against fixed points. JellySupport™ uses a soft, flexible W-shaped gel support system that moves with your body.
02 How does it work?
The gel system sits beneath the cups and extends along the sides, helping lift, shape, and stabilize the bust while spreading support across a wider area.
03 Why does it matter?
Because when support is concentrated, the band and straps take more of the pressure, and you feel it across your shoulders and back.
JellySupport™ spreads support across a wider area, helping reduce that pressure for more balanced, all-day comfort.
YOUR BEST SUPPORT STARTS WITH THE RIGHT FIT
YOUR BEST SUPPORT STARTS WITH THE RIGHT FIT
Before you ask
Clear answers to help you find the right support
What is JellySupport™ Technology?
JellySupport™ is our soft, flexible W-shaped gel support system.
It sits beneath the cups and extends along the sides, helping lift, shape, and stabilize your bust without the rigid feel of traditional underwire.
The flexible gel moves with your body while providing structured support for long days, including 12+ hours of wear.
The result? Flexible support that works with your body, not against it.
How does UNDR provide support without an underwire?
UNDR combines multiple support features instead of relying on a rigid underwire.
JellySupport™ provides flexible support beneath the cups and along the sides. Molded 3D cups help shape and contain the bust, while full coverage keeps everything securely in place. Wide support straps help distribute pressure across the shoulders.
The wireless construction gives you this structure without the rigid feel of traditional underwire.
Strong support, without the wire.
Will UNDR Core+ support a fuller bust?
UNDR is designed for women with different bodies and different support needs, including women who need stronger support.
The combination of JellySupport™, molded 3D cups, full coverage, and wide support straps provides structured support and helps keep the bust securely contained.
The wireless construction gives you support without relying on a rigid underwire.
For the best result, use our Fit Finder to find the size that matches your measurements.
FIND YOUR SIZE
What makes UNDR Core+ different from traditional bras?
Traditional bras can force you to choose between structure and comfort.
UNDR takes a different approach by combining flexible support with a wireless construction.
JellySupport™ provides structure beneath and around the bust. Molded 3D cups shape and contain, full coverage keeps everything secure, and wide support straps help distribute pressure.
Wide straps and a wider band spread the pressure, so the support never turns into a pressure point.
Support where you need it, without the rigid feel you don’t.
How do I know which size is right for me?
Use our Fit Finder.
Enter your measurements and we’ll recommend the UNDR size that best matches your body.
Because getting the right size is the first step to getting the right fit and support.
FIND YOUR SIZE
What if my UNDR Core+ bra doesn’t fit?
If your UNDR Core+ doesn’t fit as expected, our Perfect Fit Guarantee has you covered.
We’ll send you the correct size at no additional cost, and you can keep the original one.
No paying twice. No complicated exchange. No return needed
Can I wear UNDR Core+ comfortably all day?
Yes. UNDR Core+ was designed to be worn for 12+ hours, so you can stay supported throughout your day without constantly adjusting your bra.
JellySupport™ uses flexible structure that moves with your body instead of relying on rigid underwire.
Combined with the wireless construction, full coverage, and wide support straps, the design is made to keep you feeling held without feeling restricted.
12+ hours of support, without the constant discomfort.
What is your Perfect Fit Guarantee?
If your first UNDR Core+ arrives in the wrong size, we’ll send you the correct size at no additional cost.
And you can keep the original one.
No need to return it. No need to place another order.
We want finding your fit to feel easy, not risky.
IN THEIR WORDS
4.4
based on 14 reviews
WHAT WOMEN ARE SAYING
Full busts, mostly: 38DDD, 34G, 38F, women who want coverage without a wire. They describe it as light and barely there, with cups that stay put and enough support for errands and a full workday. Several bought more after the first week. The recurring note is on the straps, which a few wish held their adjustment better.
Rating
My Struggle
Size Purchased
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Carmen A.Verified Buyer Jul 2026
I forget I'm wearing it
- Age Range
- 45 - 54
- Size Purchased
- XL
- True Size
- 38DDD
Jul 2026I forget I'm wearing it
This bra is, by far, the most comfortable bra I’ve worn. I’m a natural 38DDD, and bought an XL. Fits perfectly. Material is very soft and has stretch. Provides good coverage and appropriate support. Does not replace an underwire bra or replace a sports bra, but is great for errands, house wear, and average every day wear. Would buy again. Can’t speak yet to durability, but will try to remember to come back and update. -
Veronica A.Verified Buyer Jul 2026
Light enough to forget, real support
- Age Range
- 45 - 54
- Size Purchased
- M
- True Size
- 34DD
Jul 2026Light enough to forget, real support
This bra is very comfortable and does not roll. I barely notice that I have it on. I have worn another style of this same brand and this one is my favorite. Very light and airy but also very supportive and has padding that covers well. The color and material are very nice too. I will be purchasing a few more of these bras. -
Daphne E.Verified Buyer Jul 2026
It actually holds everything
- Age Range
- 45 - 54
- Size Purchased
- M
- True Size
- 38D
Jul 2026It actually holds everything
I wear a 38 D and depending on fit sometimes a 38DD. These bras are so comfortable. The adjustable straps are a plus. Great fit and support. I definitely wouldn’t wear to a Zumba class. But an everyday bra it’s a winner in my book. -
Astrid A.Verified Buyer Jul 2026
Lift without a single wire, for a heavy bust
- Age Range
- 45 - 54
- Size Purchased
- XL
- True Size
- 34G
Jul 2026Lift without a single wire, for a heavy bust
I never write reviews but this bra has exceeded my expectations. It’s only been a couple days but it’s so comfortable and has a great lift and shape. I’m a 34 g and I got an x large, it fits perfectly!! -
Jane A.Verified Buyer Aug 2025
It actually holds everything, invisible under a shirt
- Age Range
- 45 - 54
- Size Purchased
- M
- True Size
- 38F
Aug 2025It actually holds everything, invisible under a shirt
These bras are very comfortable and supportive. My only issue is that the elastic straps to lift aren’t adjustable enough, so as they start to stretch out with wear, will have to cut and resew to shorten them. However, very flattering, love the mesh insert in the V…. Very smooth under tshirt, no back or armpit bulge. Cute when/if it peeks out thru neckline. Nice that they include extension for band. 38F. -
Sienna A.Verified Buyer Jun 2025
Comfortable enough to nap in
- Age Range
- 45 - 54
- Size Purchased
- L
- True Size
- 38D
Jun 2025Comfortable enough to nap in
Love love these bras I she 3 in 2 styles. I only give 4 stars because I can not wear this bra with all my tops. Some of my summer tops cut off low and the coverage goes higher on my chest and the straps are to large to wear the spaghetti strap shirts with. My only complaint but it is so comfortable and my boobs stay in one place. -
Kyla A.Verified Buyer Feb 2025
It holds me up all day
- Age Range
- 45 - 54
- Size Purchased
- XL
- True Size
- 34DDD
Feb 2025It holds me up all day
I took a chance on this bra after reading several reviews. My suggested size was Medium. I ordered an extra large. I have it as tight as it will go and it's still a bit big around the bottom but a large would not have been big enough in the cup. I wear between a 34DDD and 36DDD. It is very comfortable and supportive. -
Martha A.Verified Buyer Jul 2025
The first bra I don't count the hours in
- Age Range
- 45 - 54
- Size Purchased
- M
- True Size
- 36G
Jul 2025The first bra I don't count the hours in
This is very comfortable for sure. But it has the same problem as every other wireless bra I’ve tried. “The girls” end up lower than you might like and overlap the bottom banding after an hour or so. These are not huge girls, just older ones. I might try a smaller band, I do have it on the most snug hooks. -
Tania A.Verified Buyer Jun 2025
Soft wide straps, no more grooves, for a heavy bust
- Age Range
- 45 - 54
- Size Purchased
- XL
- True Size
- 38D
Jun 2025Soft wide straps, no more grooves, for a heavy bust
This bra is super comfortable. I love the wide straps because they don’t dig into my shoulders. I am a 38D and xl fits perfectly. It doesn’t give me any rolls in the back. The only reason I gave it four stars is because the part underneath my boob is constantly folding up and doesn’t stay flat. -
Lucia A.Verified Buyer Sep 2025
Twelve hours and still comfortable
- Age Range
- 45 - 54
- Size Purchased
- M
- True Size
- 36G
Sep 2025Twelve hours and still comfortable
I really love these bras. They are very comfortable and fit like bras are supposed to. They are very comfortable. The only problem I have is that the straps don't stay put when you adjust them they slide and I have to keep picking up the straps because they slide down my shoulder. -
Marjorie A.Verified Buyer Oct 2025
I don't rush to take it off
- Age Range
- 45 - 54
- Size Purchased
- M
- True Size
- 34D
Oct 2025I don't rush to take it off
Surprisingly nice bra! It is pretty comfortable but the only down side is that the straps don’t stay tightened. By the end of the day, the adjustment part has slipped down and loosened the straps which is annoying. But over all a nice bra that I will buy again. -
Maisie A.Verified Buyer Jul 2026
Comfortable from morning to night
- Age Range
- 45 - 54
- Size Purchased
- M
- True Size
- 36F
Jul 2026Comfortable from morning to night
It fits well, is comfortable, and has straps that are long enough to switch to a cross-back style. I am pleased with this bra. I liked my first purchase enough to order a second one in a different color. -
Julia A.Verified Buyer May 2026
I forget I'm wearing it, for a heavy bust
- Age Range
- 25 - 34
- Size Purchased
- 2XL
- True Size
- 36F
May 2026I forget I'm wearing it, for a heavy bust
Im absolutely OBSESSED with this bra! The material is insanely comfortable and holds the girls up beautifully. Being a mom (if you know you know) and a bit of a top heavy girl, I've never worn anything but wired bras because nothing else would hold them in place. I could go for a run without anything falling out with this girly on! Not to mention she's super cute. She can be worn under tshirts or a dinner top and not have to worry about thick straps showing. Im a 36F and I ordered a 2XL and I will 100% be getting more. -
Maribel N.Verified Buyer Apr 2026
No marks, and nothing to readjust
- Age Range
- 45 - 54
- Size Purchased
- M
- True Size
- 34F
Apr 2026No marks, and nothing to readjust
Currently, I’m a 34F and got a medium but I should’ve got a small. I have tried many MANY bras over the past 7 years and this one is my favourite so far! It is comfortable, super lightweight. Doesn’t even feel like I’m wearing a bra while still feeling the support. This is the first bra I’ve liked the look of in a T-shirt, it keeps my boobs in place without the boxy binding feel. The straps don’t dig into my shoulder at all even after intense workout. It’s completely invisible under my T-shirt, you can’t see any outline even in a tight shirt. I like the shape it makes, nice and not pointy or square. The material goes all the way to that natural extra squishy part on the armpit so it looks really smooth and nothing hangs out which is probably my favourite part. It’s hard to find bras that are supportive and comfortable on my breast reduction scars and this one is above and beyond: no rubbing, it stays in place, I don’t find myself readjusting on my back or shoulders at all. I’ve washed and dried it twice and haven’t noticed the material stretched out.
UNDR Core+Full Support Jelly Bra
$44.90