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Color: Warm Sand
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Color: Warm Sand

Size:

Size:

Mix & Match: 3+ for $25 each
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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

Sofia is wearing a 32D  | Warm Sand

Sofia is wearing a 32D

 | 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

Sofia is wearing a 32D

Color: Warm Sand

Size:

True to Size

Size:

Knix Size

Size and Fit Guide

Free Shipping on orders $100+

Shipping

Shipping
Processing Timelines

Please allow 1-2 business days for our warehouse team to pack and ship your order. During peak periods such as sales, holidays and product launches, please allow up to 4 business days for us to process your order.

Delivery Time

For the most up-to-date delivery time estimates, please refer to the shipping timeline at checkout. Delivery timelines vary depending on location and do not include processing times.

Shipping Charges

Orders over $100* CAD = Free Shipping (2-6 business days)
Orders under $100* CAD = $12 CAD Shipping (1-3 business days)
Orders delivering to NWT, Nunavut and Yukon are subject to $20 delivery fee.
*After discounts, before shipping and taxes.

Easy Returns within 30 Days

Returns

Returns
Free Returns

Knix covers the return shipping fees for exchanges and refunds initiated through our Return & Exchange Portal. Exchange orders initiated through our Return & Exchange portal are also eligible for free shipping within the USA and Canada. Please note, the shipping fees on your original order are non-refundable.

Return Policy

Return policy varies by product, please check if your item is refund or exchange eligible by viewing our full policy here.

Sale & Last Call

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

Rewards Members Earn 78 Points

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

Sofia is wearing a 32D  | 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
    6-11 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 3-6 super tampons
  • cup
    about 1-2 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • light period days
  • sweat
  • sweat and 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 3-6 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-3 super tampons
  • cup
    about 0.5-1 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • extra heavy period days
  • overnight protection
  • light bladder leaks
  • tsp
    13-17 tsp
  • pad
    3.5-4.5 regular pads
  • tampon
    7-9 super tampons
  • cup
    2-3 menstrual cups
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.

3.9
Rated 3.9 out of 5 stars
Based on 377 reviews
Total 5 star reviews: 198 Total 4 star reviews: 61 Total 3 star reviews: 43 Total 2 star reviews: 41 Total 1 star reviews: 34
71%would recommend these products
ComfortRated 4.0 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
377 reviews
  • Rated 5 out of 5 stars
    6 days ago
    Pretty colour

    I really like this bra. Very comfortable and pretty colours.

    Shannon s.
    Verified Buyer
  • Rated 3 out of 5 stars
    1 week ago
    Verdict is still out…

    I am not sure if choosing a wire bra was correct for me. I did purchase 2 of these in store, after a fitting (the staff person was very helpful), but I feel the wire during the day which I was assured I would not. The other Knix non-wire bras I have I don’t ever feel like I have to adjust during the day, and these ones I do. They’ve been washed once. Maybe a couple more washes..? I dunno. I’m skeptical this was the correct choice for me.

    Anna S.
    Verified Buyer
  • Rated 4 out of 5 stars
    1 week ago
    Nice bra.

    Not as comfortable for wearing all day long as my other Knix bras but it's great for a night out!

    Tamara C.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Great bra

    Very comfortable unlike any other underwire bras

    Bernadette Z.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Demi Bra

    Love this bra - very comfortable ad no wires!

    Barbara H.
    Verified Buyer
  • Rated 4 out of 5 stars
    3 weeks ago
    Free flex Demi Bra

    I love the fit, only complaint would be that the flex free underwire makes a squeaking noise when you are walking or moving. Hoping it will go away after a few washes.

    Cheryl H.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 weeks ago
    Love my FreeFlex

    When you need a little bit more support, this is the bra!

    Its extremely comfortable & looks great under tight t-shirts.

    Leanne T.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 weeks ago
    Best bra in a long time!

    This bra is so comfortable! Bras I’ve bought in the past were awkward in size or I’d find red marks in my skin at the end of the day. Not this one!

    Sierra D.
    Verified Buyer
  • Rated 1 out of 5 stars
    4 weeks ago
    Disappointment

    The middle part of the bra was stiff and left red marks. Not made for me. Very uncomfortable.. so disappointing.

    Natalie T.
    Verified Buyer
  • Rated 1 out of 5 stars
    4 weeks ago
    Didn't fit

    This was my 3rd attempt to find a Knix bra that fit. Once again I was unable to find the right fit. The cups in the bras are just too big for an A cup. I have other brands of bras that fit but they are wearing out. I was hoping to find replacements from Knix, I guess it just wasn't meant to be. I am sorry it didn't work out.

    Sandra M.
    Verified Buyer
  • Rated 3 out of 5 stars
    4 weeks ago
    Wasn’t thrilled

    More gapping than I expected. Was wanting a supportive v-neck underwire … not great.

    Jeannie F.
    Verified Buyer
  • Rated 4 out of 5 stars
    1 month ago
    Love it, but it makes a lot of noise.

    It is great to have an underwire bra from knix, as I always felt I needed that lift the other bra's don't provide with a larger cup size. I do love this bra, but it is VERY noisy, it is always making "creaking" noises when I move. I have washed it SO many times. I have 2 and they are both like this. I probably won't buy another because of the noise it makes.

    Olivia A.
    Verified Buyer