Guide to Knix Bra Styles, Sizing and Fit

Below is a mostly-comprehensive list of Knix bras, including their style names and style numbers, with notations on whether each is suitable for shallow or projected breasts and wide or narrow roots. The list prioritizes bras currently available, but some discontinued styles are included. 
Knix is a Canadian direct-to-consumer intimate apparel brand founded in 2013 by Joanna Griffiths. It began with innovative leakproof period underwear and quickly expanded into wireless bras, sports bras, activewear, loungewear, and more. The brand emphasizes comfort, inclusivity, body positivity, and functionality for real-life needs (e.g., periods, postpartum, workouts). Knix pioneered size-inclusive designs, using real customers in campaigns and focusing on wireless support for larger busts.

Notes on Fit and Breast Shape

Shallow vs. Projected: Shallow breasts have less forward projection and a wider base, needing wider, less deep cups. Projected breasts extend farther out, requiring deeper cups with immediate projection at the wire. Wacoal’s “Shape Revelation” collection targets specific shapes (e.g., shallow top/full bottom), aiding identification.

Wide vs. Narrow Roots: Wide roots span a broader chest area, needing wider wires; narrow roots are more compact, needing narrower wires. Wacoal’s fit guides and user feedback help determine wire width suitability.

Knix bras are predominantly wireless, using bonding technology, buttery-soft fabrics, and innovative support systems for seamless, comfortable wear. Knix bras generally feature wide roots (extra side coverage/"wings" to prevent spillage, wide-set design) and are best for shallow to moderate projection (molded or seamless cups often lack immediate depth, leading to issues for highly projected shapes like bottom wrinkling or tissue pushing up/center). They excel for wide-rooted, shallower breasts needing everyday comfort or low-medium support, but may not provide enough encapsulation/lift for very projected or narrow-rooted busts.

Knix Sizing System vs. Traditional Bra Sizing

Knix previously used a proprietary numbered system (sizes 1-8 with +, ++ variants for larger cups, e.g., 6++ fitting approx. 32G-H equivalents) that mapped multiple traditional sizes into one for simplicity. In 2024, Knix transitioned to traditional US bra sizing (band 28-48, cups A-H) for most styles, especially the relaunched WingWoman Contour Bra (now in 99 sizes). This change uses direct measurements: snug underbust for band, bust difference for cup.

List of Knix Bra Styles

Size ranges vary by style (generally 28A-44H where offered; check product pages).

Status

Style Name

Style Number

Size Range (Typical)

Wide/Narrow Roots Fit

Shallow/Projected Fit

Short Description

Current

WingWoman Contour Bra

N/A

Up to 48H

Good for wide

Good for shallow/moderate

Best-selling wireless molded contour with side wings for coverage, adjustable straps, plunging neckline; light padding for shape.

Current

Revolution V-Neck Bra

N/A

Varies

Good for wide

Good for shallow

Wireless buttery-soft V-neck with innovative support; part of Revolution line for lift without wires.

Current

The One&Only Scoop Bra

N/A

Varies

Good for wide

Good for shallow

Padded wireless scoop-neck everyday bra; molds for comfort.

Current

Good to Go Seamless Bra

N/A

Varies

Good for wide

Good for shallow

Seamless wireless for smooth under-clothes look.

Current

FreeFlex™ Demi Bra

N/A

Varies

Good for wide

Moderate

Wireless demi with flexible support.

Current

Uplift Push Up Bra

N/A

Varies

Good for wide

Good for shallow

Wireless push-up for lift and comfort.

Current

Revolution Shadow Mesh Bra

N/A

Varies

Good for wide

Good for shallow

Mesh wireless in Revolution line.

Current

Revolution Busty Bra

N/A

Varies (busty-focused)

Good for wide

Good for shallow

Wireless designed for fuller busts in Revolution series.

Current

Catalyst Sports Bra

N/A

Varies

Good for wide

Moderate

High-impact encapsulation/compression wireless sports bra; reduces bounce significantly.

Current

Longevity Sports Bra

N/A

Varies

Good for wide

Moderate

Medium-support wireless sports.

Current

Catalyst Front Zip Sports Bra

N/A

Varies

Good for wide

Moderate

Front-zip high-impact wireless sports.

Current

Momenta Racerback Sports Bra

N/A

Varies

Good for wide

Moderate

Racerback wireless sports.

Current

Revolution Adjustable Pullover Bra

N/A

Varies

Good for wide

Good for shallow

Pullover wireless with adjustability.

Current

Revolution Nursing Bra

N/A

Varies

Good for wide

Good for shallow

Wireless nursing with easy access.

Current

BlissFit™ Nursing/Pumping Bra

N/A

Varies

Good for wide

Good for shallow

Nursing/pumping compatible wireless.

Current

SweetDreams Nursing Bra

N/A

Varies

Good for wide

Good for shallow

Sleep-friendly nursing wireless.

Current

Lace Bra / Mesh Deep V Bra / Shimmer Stretch Bra

N/A

Varies

Good for wide

Good for shallow

Decorative wireless options (lace, mesh, shimmer).

Current

Bralettes (e.g., Logo Rib Modal, Cotton Rib Scoop)

N/A

Varies

Good for wide

Good for shallow

Soft wireless bralettes for light support.

Last Call/Discontinued

Original WingWoman Contour Bra

N/A

Limited

Good for wide

Good for shallow

Previous version of bestseller (pre-2024 relaunch).

Discontinued

Evolution Bra (incl. 8-in-1)

N/A

N/A

Good for wide

Good for shallow

Reversible wireless multi-way bra; highly praised but discontinued.

Discontinued

LuxeLift Pullover Bra

N/A

N/A

Good for wide

Good for shallow

Pullover tank-style wireless support.

 

Notes on Fit Characteristics:

  • Wide vs. Narrow Roots: Wide side panels and cups suit wide roots well; narrow roots may experience wires/cups extending too far.
  • Shallow vs. Projected: Shallower cups common; great for shallow shapes, but projected breasts often report poor depth/support.
  • Many styles mold/stretch initially tight for custom fit; wireless focus prioritizes comfort over structured lift.

As always, if you have questions (or suggestions/experiences to improve this list), you can get in touch via the Contact Form or send an email to billysbras@gmail.com