Demi Boost Inserts

Sale price $55.00 USD
Size: AA
Color: Beige

SIZING GUIDE

Demi Boost Inserts

If you are unsure of your bra size, please measure your bust and contact us with the measurements.

For sizes 34M and up, our Invisible Lift Inserts (lightly padded) are available in sizes up to 34R.

For the Demi Boost, size Extra-Small will be shipped for size AA. Size Small will be shipped for sizes A, B, and C. Size Medium will be shipped for sizes D and E. Size Large will be shipped for sizes F and G. Size Extra-Large will be shipped for sizes H, I, and J, and size 2Extra-Large will be shipped for sizes K, L, and M.

Please note that results may vary depending on breast size and shape. Results will be similar to a double push up bra. BOOMBA padded inserts work best with natural breasts.

DEMI BOOST INSERTS

bra size

A Cups

US Size

Boomba Bra Size

Size Category

28A

AA

X-Small

30A

AA

X-Small

32A

AA

X-Small

34A

A

Small

36A

B

Small

38A

C

Small

40A

D

Medium

42A

E

Medium

44A

F

Large

B Cups

US Size

Boomba Bra Size

Size Category

28B

AA

X-Small

30B

AA

X-Small

32B

A

Small

34B

B

Small

36B

C

Small

38B

D

Medium

40B

E

Medium

42B

F

Large

44B

G

Large

C Cups

US Size

Boomba Bra Size

Size Category

28C

AA

X-Small

30C

A

Small

32C

B

Small

34C

C

Small

36C

D

Medium

38C

E

Medium

40C

F

Large

42C

G

Large

44C

H

X-Large

D Cups

US Size

Boomba Bra Size

Size Category

28D

A

Small

30D

B

Small

32D

C

Small

34D

D

Medium

36D

E

Medium

38D

F

Large

40D

G

Large

42D

H

X-Large

44D

I

X-Large

DD/E Cups

US Size

Boomba Bra Size

Size Category

28DD/E

B

Small

30DD/E

C

Small

32DD/E

D

Medium

34DD/E

E

Medium

36DD/E

F

Large

38DD/E

G

Large

40DD/E

H

X-Large

42DD/E

I

X-Large

44DD/E

J

X-Large

DDD/F Cups

US Size

Boomba Bra Size

Size Category

28DDD/F

C

Small

30DDD/F

D

Medium

32DDD/F

E

Medium

34DDD/F

F

Large

36DDD/F

G

Large

38DDD/F

H

X-Large

40DDD/F

I

X-Large

42DDD/F

J

X-Large

44DDD/F

K

2X-Large

G Cups

US Size

Boomba Bra Size

Size Category

28G

D

Medium

30G

E

Medium

32G

F

Large

34G

G

Large

36G

H

X-Large

38G

I

X-Large

40G

J

X-Large

42G

K

2X-Large

44G

L

2X-Large

H Cups

US Size

Boomba Bra Size

Size Category

28H

E

Medium

30H

F

Large

32H

G

Large

34H

H

X-Large

36H

I

X-Large

38H

J

X-Large

40H

K

2X-Large

42H

L

2X-Large

44H

M

2X-Large

I Cups

US Size

Boomba Bra Size

Size Category

28I

F

Large

30I

G

Large

32I

H

X-Large

34I

I

X-Large

36I

J

X-Large

38I

K

2X-Large

40I

L

2X-Large

42I

M

2X-Large

J Cups

US Size

Boomba Bra Size

Size Category

28J

G

Large

30J

H

X-Large

32J

I

X-Large

34J

J

X-Large

36J

K

2X-Large

38J

L

2X-Large

40J

M

2X-Large

K Cups

US Size

Boomba Bra Size

Size Category

28K

H

X-Large

30K

I

X-Large

32K

J

X-Large

34K

K

2X-Large

36K

L

2X-Large

38K

M

2X-Large

L Cups

US Size

Boomba Bra Size

Size Category

28L

I

X-Large

30L

J

X-Large

32L

K

2X-Large

34L

L

2X-Large

36L

M

2X-Large

M Cups

US Size

Boomba Bra Size

Size Category

28M

J

X-Large

30M

K

2X-Large

32M

L

2X-Large

34M

M

2X-Large

N Cups

US Size

Boomba Bra Size

Size Category

28N

K

2X-Large

30N

L

2X-Large

32N

M

2X-Large

O Cups

US Size

Boomba Bra Size

Size Category

28O

L

2X-Large

30O

M

2X-Large

P Cups

US Size

Boomba Bra Size

Size Category

28P

M

2X-Large

Tip: For the perfect fit, we recommend choosing your true size. Only size down if you are in between sizes.

If you need any help with sizing or insert styles, please feel free to contact us for further assistance, we'd love to hear from you!

Know your size before buying
Unsure of which size to choose? Input your band and cup size below to get your size!
Result size:

Still need assistance? We’ll help you find the perfect fit. Send us your bust and underbust measurements.

FREE RETURNS & EXCHANGES ON ALL PRODUCTS. T&C applies.

PATENT PROTECTED

This padded insert is specially designed for demi cup styles. Stick it inside wedding dresses, bras, bandeau bikinis, etc. for a natural-looking boost.

Natural-looking boost designed for demi cup style clothing
Boosts up to 2 cup sizes
Prevents nipple slips in low cut tops
Insert stays put and keeps clothing in place
Interchangeable between outfits, no sewing required
Our inserts are not intended for individuals who have sensitive or thin skin or women who are pregnant or breastfeeding

Unlike a sticky bra that is supported by the adhesive, BOOMBA inserts are supported by the clothing, they cannot stay up by themselves. It is crucial to wear them in tight, structured, and fitted tops.

For the perfect fit, we recommend choosing your true size. Only size down if you are in between sizes.

Have augmented breasts? Please check our FAQ section to see if they are suitable for you.

Please note that our inserts are not intended for individuals who have sensitive or thin skin or women who are pregnant or breastfeeding.

How to use inserts

Check out this blog to know which insert is suitable for your outfit.

Ultra Boost
Ultra Boost: Lifts and adds 2 cup sizes, perfect for deep plunge tops and triangle bikinis.
Demi Boost
Demi Boost: The shortened version of our Ultra Boosts. Lifts and adds 2 cup sizes, perfect for sweetheart necklines.
Perfect Boost
Perfect Boost: Lifts and adds 1 cup size, perfect for a subtle boost in size.
Invisible Lift
Invisible Lift: Lightly padded, designed to lift and shape without adding size in deep plunge tops and triangle bikinis.
SUBTLE LIFT
Subtle Lift: The shortened version of our Invisible Lift. Lightly padded, designed to lift and shape without adding size in sweetheart necklines.
MICRO LIFT
Micro Lift: Created specifically to stay hidden under micro bikinis. Lightly padded, designed to lift and prevent nip-slips.
Limited time only, FREE shipping on orders $40+ USD for:
Australia, US (excluding Alaska and Hawaii), Singapore, UK, Canada, Hong Kong, Austria, Belgium, Czechia, Denmark, Estonia, France, Germany, Hungary, Ireland, Japan, Lithuania, Luxembourg, Macao, Malaysia, Netherlands, New Zealand, Philippines, Poland, Portugal, Spain, Slovakia, Sweden, Thailand, and Vietnam.
Free Shipping on orders $115+ for the rest of the world, otherwise $14.99 shipping fee applies.
Please find the average transit time below:
Average SHIPPING TIME
By Regions
North America
State/Country
Business Days
United States
4-12
Hawaii
8-15
Canada
6-11
Mexico
5-12
Oceania
State/Country
Business Days
Australia
5-12
New Zealand
8-10
Asia
State/Country
Business Days
Israel
2-4
South Korea
2-4
North Korea
2-4
Ukraine
3-5
Hong Kong
3-7
Singapore
3-7
Thailand
3-7
Philippines
3-7
Malaysia
3-7
Rest of Asia
5-15
Europe
State/Country
Business Days
UK
4-10
Germany
4-10
EU
10-15
Switzerland
6-10
Austria
7-11
Rest of Europe
10-15
Rest of the World
State/Country
Business Days
Rest of the World
10-25

AS FEATURED IN

Instantly Lift and
Boost up to 2x size

Just stick to skin and clothing, no bra required!

SHOP BOOMBA NOW

See BOOMBA in Action

Look how other women uses BOOMBA Inserts for every clothing style!

casual
Bridal
Evening
Bikini
Sportswear
Here’s Why It Stands Out

What Makes Our Demi Boost Inserts Different?

Boost Up to 2 Cup Sizes

The most padded insert on the market—your go-to for a
dramatic yet natural-looking enhancement.

Double-Sided Adhesive

Built-in adhesive keeps inserts secure and in place, so you
can move freely with confidence.

Sweat & Water Resistant

Designed to withstand heat, sweat, and splashes—perfect
for long wear, day or night.

No Sewing, Fully Versatile

Easily interchangeable between outfits; best worn with
structured, fitted tops for maximum lift and hold.

Why Choose
BOOMBA?

BOOMBA products are created by women for women. That’s why our products fit better and feel better, because we have also experienced the same struggles you have right now.

We create our products using the best materials and really put care and thought behind the design to ensure a seamless and comfortable fit. When you wear BOOMBA’s products, you will definitely feel and see the difference.

STEP-BY-STEP TUTORIAL

How to Use Your BOOMBA Inserts

1 Wear insert
Place the inserts onto the clothing, then stick it onto your breast.
2 Scoop Up
Scoop and ensure that your breasts are resting on the inserts in a position that looks natural.
3 SECURE
Stick the insert and clothing onto your 
breast to secure the position.

STEP-BY-STEP TUTORIAL

How to Wear Your
Sticky Bras Correctly?

1

Make sure you are wearing proper garments. 

For best results, it is important to wear thick, tight (non-
stretchy) clothing, preferably with structure in the bust.

2

Put on your article of clothing.

3

Place the inserts onto the clothing. We DO NOT recommend
sticking the insert onto the breast first, as it would cause
unevenness and make it harder to achieve desirable results.

4

Scoop breasts up to the desired position. Scooping is the
most important step, as it ensures that your breasts are
resting on the inserts in a position that looks natural.

5

Stick insert and clothing onto your breast to secure position.

REVIEWS FROM OVER 100,000+ CUSTOMERS

Don’t just take our words for it,

Our customers love us!

BEFORE

AFTER

ULTRA BOOST INSERTS

Most natural looking boost I have ever tried

I used to tuck my bra straps in my bra cups but I always felt insecure as it would move around and I was worried the bra strap would come back out. These inserts are perfect because they literally give the best, most natural looking boost I have ever tried. If you haven't tried them yet, this is you sign to get them now! Seriously the best purchase I have made!

TAYLOR

Washington, US

ULTRA BOOST INSERTS

Most natural looking boost I have ever tried

I used to tuck my bra straps in my bra cups but I always felt insecure as it would move around and I was worried the bra strap would come back out. These inserts are perfect because they literally give the best, most natural looking boost I have ever tried. If you haven't tried them yet, this is you sign to get them now! Seriously the best purchase I have made!

Maddie K.

Washington, US

ULTRA BOOST INSERTS

Most natural looking boost I have ever tried

I used to tuck my bra straps in my bra cups but I always felt insecure as it would move around and I was worried the bra strap would come back out. These inserts are perfect because they literally give the best, most natural looking boost I have ever tried. If you haven't tried them yet, this is you sign to get them now! Seriously the best purchase I have made!

Maddie K.

Washington, US

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