Demi Boost Inserts

$28.99 $55.00
By Boomba



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
  • Sweat & water resistant 
  • 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.

The sizing guide below only serves as a guideline. For the most accurate fit, please measure your garment
Please note that results may vary depending on breast size and shape. Results will be similar to a double push-up bra. BOOMBA results work best with natural breasts. 

Demi Boost Inserts:

Tip: always size down if you're in between sizes for a seamless fit.

Please note, Demi Boosts come in three sizes (small, medium, and large). Size small is suitable for cup sizes AA / A / B / C, size medium is suitable for sizes D / E, and size large is suitable for sizes F / G.

Shipping & Returns


Shipping charges are not refundable.

Orders placed with Standard Shipping will ship within 1-2 business days. Please note that orders placed after 2pm EST on Friday or over the weekend will ship on the following Monday (excluding major holidays).

Expedited and Overnight orders placed by 12:00pm EST Monday-Friday will be shipped same day. Expedited and Overnight orders placed after 12:00pm EST on a Friday, Saturday or Sunday will ship on the following Monday (excluding major holidays).

We currently offer free Standard Shipping, within the United States, for minimum purchases of $100.00. This excludes taxes and shipping. We sometimes run Free Shipping specials. Please check our homepage or sign up for our newsletter for most accurate shipping specials. 

We ship internationally! International orders placed on a Thursday or Friday, may take up to 5-7 business days to ship. Orders shipped internationally are not eligible for refund or exchange. We do not pay duties and taxes for international buyers. Please check with your local government to inquire about fees. 

Fitness Hub Activewear Boutique is not responsible for lost or stolen packages. Customers should file directly with the carrier (USPS, FedEx, DHL).


We want the very best for our clients. We offer free returns & exchanges on all domestic orders. Simply request a return here within 30 days of placing your order, with the item in original condition, unworn, unaltered and free of damages with all tags attached. Returns can also be processed at any of our boutique locations. See here for boutique locations and hours. (link to contact us page). Easy!

Once you have processed the return request, you will be redirected to a page with a printable Return Authorization Form (RMA) and Shipping label as well as receive an email with your RMA and a link to download your free return label.

Once your return has been received by our Returns Department, the item(s) will be inspected to make sure it was returned in original condition, unworn, unaltered and free of damages with all tags attached. Once Approved, a refund (excluding shipping) will be issued to the original form of payment.

Items are returnable with the exception of Final Sale, as well as the following:

  • Bathing suits
  • Bodysuits
  • Socks
  • Underwear
  • Water Bottles
  • Head Bands
  • Hair Ties
  • Yoga Mats
  • Sale items 50% off or more
  • Items with the word CLEARANCE in the title

When trying on your item(s) please ensure you are not wearing make-up, deodorant, or self-tanner that may damage the item.

We reserve the right to return any item(s) that does not comply with our return policy. 

Discounts and sales do not apply to previous purchases.


We offer free exchanges for domestic orders. Simply follow the steps under “Returns”. Select the item(s) you wish to exchange and the new size/item(s) you’d like to exchange it for in the notes section. Once original item(s) has been received and processed by our Returns Department, your new item(s) will be shipped to you. Please note: we can not guarantee the item(s) you are requesting in exchange is in stock. In the event it is sold out, we will contact you to see if you would like a refund or another item(s) to exchange it for. Discounts and sales do not apply to previous purchases.