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Home / Bras / FreeFlex™ Demi Bra
Best Seller

FreeFlex™ Demi Bra

$78.00 CAD

10% off Bra & Underwear Sets*
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Our first underwire bra

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Comfortable, flexible wire

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Lifts and separates

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Lightly lined molded cups

| Warm Sand
| Warm Sand
Sofia is wearing a 32D | Warm Sand

Sofia is wearing a 32D

| General
| General
| General
| General
Sofia is wearing a 32D | Warm Sand

Sofia is wearing a 32D

Color: Warm Sand

Size:

True to Size

•

Size:

Knix Size

Size and Fit Guide

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Items discounted 30% and below are eligible for size exchange or store credit. Items discounted above 30% and above are final sale – no refunds, store credits, or exchanges can be accommodated.

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The Underwire Bra Reinvented

Wear tested for over 625 hours, providing unparalleled lift, separation, and support.

All Day Comfort

It's everything you want from an underwire bra without the downfalls of one.

Feels Made For You

Lightly lined, moulded demi cups lift and separate for a great shape that looks amazing under lower necklines and T-shirts. Adjustable straps create the perfect fit.

Smooth Coverage

The ultimate t-shirt bra that appears invisible under clothes.

Zoom

| Warm Sand
| Warm Sand
Sofia is wearing a 32D | Warm Sand
| General
| General
| General
| General
Sofia is wearing a 32D | Warm Sand

How to Choose?

Essential

Drop
Drop
Drop
Drop
Drop
  • • Everyday Wear
  • • No leakproof protection
  • tsp
    0 tsp

Heavy

Drop
Drop
Drop
Drop
Drop
  • • heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    about 8-14 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 4-7 super tampons
  • cup
    about 1.5-3 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • • light period days
  • • sweat
  • • discharge
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

Drop
Drop
Drop
Drop
Drop
  • • moderate period days
  • • light bladder leaks
  • • sweat
  • tsp
    about 4-8 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-4 super tampons
  • cup
    about 0.5-3 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • • extra heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    about 15-20 tsp
  • pad
    about 1.5-2.5 super pads
  • tampon
    about 7-11 super tampons
  • cup
    about 2-3 menstrual cups

How it Compares

WingWoman Contour Bra
Wireless support

Wireless support

Extra side and back coverage

Extra side and back coverage

Lightly lifts and separates

Lightly lifts and separates

Uplift Push Up Bra
Wireless boost

Wireless boost

Foam panel creates natural lift

Foam panel creates natural lift

All-day comfort

All-day comfort

FreeFlex™ Demi Bra
Comfortable, flexible underwire

Comfortable, flexible underwire

Lightly lined cups

Lightly lined cups

Lifts and separates

Lifts and separates

Revolution V-Neck Bra
#1 Best-selling bra

#1 Best-selling bra

Deep V Neckline

Deep V Neckline

Wireless Support & Lift

Wireless Support & Lift

FREEFLEX™ TECHNOLOGY

Meet our first wired bra reimagined for optimal comfort and support

Wear tested for more than 625 hours to provide unparalleled lift, separation and support.

Molded Cups

Carbonized Flexible Wire

Innovative carbonized wire flexes and moves with you, delivering the classic structure of an underwire without pinching or digging.

Our Best-Selling Bras

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The One&Only Scoop Bra®

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FreeFlex™ Demi Bra

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Revolution Adjustable Pullover Bra

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3.9
Rated 3.9 out of 5 stars
Based on 435 reviews
Total 5 star reviews: 223 Total 4 star reviews: 69 Total 3 star reviews: 51 Total 2 star reviews: 48 Total 1 star reviews: 44
69%would recommend these products
ComfortRated 3.9 on a scale of 1 to 5
FitRated -0.1 on a scale of minus 2 to 2
SupportRated 4.1 on a scale of 1 to 5
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435 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    LOVE!

    This is the most comfortable wired bra I've owned. I had high expectations for this Knix product and they didn't disappoint! I will definitely be buying more of these.

    Nicole H.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    16 hours ago
    5 Stars

    Love the fit and feel

    i tried to order the boxers but it sold out

    Carol
    Was this helpful?
  • Rated 3 out of 5 stars
    Yesterday
    3 Stars

    This bra is comfy but squeaks! The smallest movement make it so squeaky and i cant do my job without laughing.

    Natasha
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  • Rated 5 out of 5 stars
    3 days ago
    5 Stars

    Took me awhile to figure out the proper fit and very happy with the end result

    Hanna
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  • Rated 2 out of 5 stars
    6 days ago
    Imperfect Fit

    I ordered the right size; but there are gaps in the sides of the fabric and the bra makes sounds where the underwire is located. I'm probably going to donate the bra. I ordered a size down and there was no improvement in the fit or sounds the underwire makes.

    DENISE A.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    1 week ago
    4 Stars

    Comfortable light underwore bra with great support

    Jody
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  • Rated 3 out of 5 stars
    1 week ago
    Not the Greatest

    I'd say this bra is adequate. It squeaks, like many others have said, and I feel its presence too much on my sides. But it has good shape. Hoping the noise goes away with washing a few times and wearing it in?

    I originally bought my usual size, but it was far too small in the band, so I went by their sizing and it worked.

    Larissa
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    1 week ago
    4 Stars

    Fits nicely but one wire is shaped a little funny and occasionally digs in

    Elizabeth
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  • Rated 5 out of 5 stars
    1 week ago
    Great

    Beige an pd blacj

    Connie C.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    So comfy!

    The Knix version of an underwire bra is the most comfortable. I will definitely get more in different colours. My only wish is they come up with this model in a full coverage bra

    Isabelle D.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    2 weeks ago
    Looks good, sounds funny…

    It’s strange.. whatever is used in the underwire, it squeaks!! Kind of annoying!

    Pamela S.
    Verified Buyer
    Was this helpful?
  • Rated 2 out of 5 stars
    2 weeks ago
    Flex free Demi

    I found the sizing to be a bit off but replaced with the correct size. The fit is nice but the centre area between the cups I find to be quite uncomfortable and really can’t wear it unfortunately.

    Natalie W.
    Verified Buyer
    Was this helpful?