UltimateBoost Inserts
UltimateBoost Inserts
Confidence That Stays Put
Strapless? Backless? Bikini? These stay on — even when nothing else does.
“I forgot I was even wearing them.”
Stays invisible under anything.
Feels natural in everything.
Sweatproof.
Swimproof. Tug-proof.
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💸 60-Day Fit Guarantee — Don’t love the lift? We’ll refund it. 💸
Grabbed these last minute for a friend’s July wedding, lots of dancing. I’m a 34 B, slipped the inserts into my usual bra, pressed them in place, and forgot about them until I peeled them off 8 hours later at 2 a.m. No shifting, no weird lines. Rinsed them in the sink and tossed them in my travel pouch. if I’m dressed, these are coming with me..
Stay-Put Promise
Stay-Put Promise
UltimateBoost’s dual-sided adhesive is lab-tested for water, sweat, and high-impact motion, so it grips both your skin and your bra lining from yoga flow to pool plunge.
The silicone flexes with every move, eliminating corner lift or shifting.
Pop them in, press for three seconds, and you’re locked in for the day.
Thousands of customers have sprinted, danced, and swum—no slips, just lift.
Find Your Perfect Size
Find Your Perfect Size
Match the insert to your current cup (e.g., wear a 34 B → choose size B).
The ultra-thin silicone molds inside the cup, so your band and straps stay exactly the same.
If your cups already feel snug at the top, simply loosen your straps a notch or use a bra with a touch more depth for extra comfort.
The result: easy sizing and a natural lift that looks—and feels—made for you.
Our quick chart below covers every band/cup combo—and our fit team is on standby if you need a second opinion.
Sensitive-Skin Friendly
Sensitive-Skin Friendly
Yes! We use hypoallergenic, medical-grade silicone approved for daily skin contact—even on ultra-sensitive types.
No latex, no harsh glues, zero itch or redness reported in our wearer trials. Just a secure, gentle hold you’ll forget is there until you peel it off.
Rinse, air-dry, and the adhesive refreshes for tomorrow.
Feels like nothing. Lifts like everything.
Feels like nothing. Lifts like everything.
Not a chance of spotting them!
Each insert tapers to under 1 mm at the edge, melting into the cup so there’s no ridge under tees, lace, or silk. Skin-tone shades keep the look seamless in sheer tops and swimwear.
Friends will notice your gorgeous shape, not what’s creating it.
Confidence: on display; inserts: your little secret.
Reusable Up to 50×
Reusable Up to 50×
With a quick rinse in mild soap and an overnight air-dry, UltimateBoost stays sticky and shape-perfect for at least 50 wears—often more.
Alternating pairs (hello, 2-pack!) lets each set “rest,” extending life even further. More wears = lower cost per lift.
Heat & Odor? Nope.
Heat & Odor? Nope.
Silicone doesn’t make you hotter—it simply rests against your skin without trapping extra heat.
Keep cool by wiping off any natural perspiration before placement—our adhesive is engineered to stay locked during sweltering summer walks, HIIT sessions, and pool days alike.
The medical-grade material is naturally odor-neutral, and a rinse after wear keeps it fresh.
Heavy sweater? Lightly dust baby powder under the bust and you’re breezy all day.
Shipping & Delivery
Shipping & Delivery
We offer fast and reliable shipping options. Delivery times vary based on your location, but we’ll provide tracking information so you can follow your order.
Average order delivery is 3-8 days
Risk-Free Lift
Risk-Free Lift
We want you head-over-heels. Try UltimateBoost for 60 days; if they’re not the confidence game-changer you hoped for, send them back for a full refund—no questions asked.
Keep the bonus nipple covers as our thank-you for giving us a whirl.
That’s how sure we are you’ll never want to be without them again.
UltimateBoost Inserts
BRA SIZE
| Your Cup Size | Insert Size |
|---|---|
| 34A | A |
| 36A | B |
| 38A | C |
| 40A | D |
| 42A | E |
| - | - |
| 32B | A |
| 34B | B |
| 36B | C |
| 38B | D |
| 49B | E |
| - | - |
| 30C | A |
| 32C | B |
| 34C | C |
| 36C | D |
| 38C | E |
| - | - |
| 28D | A |
| 30D | B |
| 32D | C |
| 34D | D |
| 36D | E |
| -.- | |
| 28DD/E | B |
| 30DD/E C | |
| 32DD/E | D |
| 34DD/E | E |
| - | - |
| 28DD/F | C |
| 30DDD/F | D |
| 32DDD/F | E |
| - | - |
| 28G | D |
| 30G | E |
| 28h | E |
Flawless Curves, Instantly
★★★★★ 20,000+ Confident Women
From Flat to Boobilicious in Seconds!
See the difference?
That could be YOU!
Whether it's a date night, a day at the beach, or just feeling fabulous, these inserts give you the lift and confidence you've been dreaming of.
Babes everywhere are LOVING it
95%
Confidence Boost
Said their confidence skyrocketed instantly
94%
Natural Lift
Noticed a natural, flattering lift in their shape
90%
All-Day Comfort
Felt more comfortable and secure all day long
Thousands of women are already loving their new look—don’t miss out on the lift that’s changing lives!
Why Settle for Less When You Can Have the Best?
See how we outshine the competition—because you deserve nothing but perfection.
|
Others | |
|---|---|---|
| Tested for Comfort | ||
| Hypoallergenic & Skin-Safe | ||
| Waterproof & Sweat-Proof | ||
| Reusable Up to 50+ Wears | ||
| Invisible Under Any Outfit | ||
| Featured in Vogue & Forbes | ||
| Loved by 95% of Customers |
What Babes Like You Are Saying
-
Wore them at my sister’s wedding 💃
I was in a deep V satin dress, and these inserts gave me the perfect shape without anything showing through. Danced for hours—no shifting, no sweat drama. Honestly didn’t expect them to last all night, but they did. Glad I grabbed the 2-pack so I can keep one for events and one in my gym bra.
-
Soft lift, even under scrubs
I’m a nurse and needed something invisible, secure, and not annoying during 12-hour shifts. These stayed in place all day, even under my sports bra and scrubs. I forgot they were there. They give me just enough shape to feel more confident on long days, which might sound silly—but it helps.
-
I love them actually!
The first time I wore them, they felt slightly off-center… but I adjusted and now I wear them literally every day. I'm a 32B and got size A—they add just enough to fill out tops without looking fake. I was afraid they’d feel sticky or sweaty but honestly they’re more comfy than my old padded bras.
Your Questions, Our Confidence Boost: All You Need to Know
Will these bra inserts really stay in place all day?
Will these bra inserts really stay in place all day?
Yes! Our inserts feature a dual-sided, waterproof, and sweat-proof adhesive designed for all-day hold—even during workouts or long days on the go. They have been rigorously tested to ensure they won’t shift, so you can focus on your day with confidence.
Is the adhesive safe for sensitive skin?
Is the adhesive safe for sensitive skin?
Absolutely. Our hypoallergenic, skin-friendly adhesive is gentle and has been dermatologically tested to minimize irritation. We designed these inserts for comfort, so even those with sensitive skin can enjoy a secure lift without discomfort.
Can I use these inserts with any type of bra or outfit?
Can I use these inserts with any type of bra or outfit?
Yes, they’re incredibly versatile! Whether you’re wearing a sports bra, strapless dress, or even a bikini, our inserts adapt seamlessly to your style. Their invisible design means no one will ever know you’re enhancing your look.
How do I clean and reuse them?
How do I clean and reuse them?
Cleaning is simple—just rinse them with mild soap and water, let them air dry, and they’re ready to be used again. Our inserts are built to last, offering consistent performance over multiple uses.
What kind of lift can I expect?
What kind of lift can I expect?
Our inserts deliver a natural enhancement that subtly improves your silhouette. They’re engineered to provide a boost that enhances your curves without looking overdone, so you get the confidence boost you desire while keeping a natural look.
Is it visible under clothes?
Is it visible under clothes?
Not at all! The ultra-thin, seamless design ensures they’re completely invisible under any outfit. No one will know you’re wearing them.
How does it work?
How does it work?
Simply peel off the adhesive backing and place them inside your bra, swimsuit, or outfit. Adjust for comfort, and you’re ready to go! They’re reusable and easy to clean.