• Soft Bras
    Size
    Underbust
    Bust
    Cups
    XS
    26.5-27.5"
    28.5-31.5"
    A
    S
    28-29"
    31.5-34.5"
    A-B
    S+
    28-29"
    34-36"
    C-D
    M
    30-31"
    34-36"
    B-C
    M+
    30-31"
    36.5-38.5"
    D-E
    L
    32-34"
    35.5-38.5"
    B-C
    L+
    32-34"
    39-42"
    D-E
    XL
    35-37"
    39-42"
    C-D
    XL+
    35-37"
    42.5-46.5"
    E-F
    2XL
    38-41"
    43-46"
    C-D
    2XL+
    38-41"
    47-51"
    E-F
    3XL+
    42-45"
    51-55"
    F

    Sizing Tips:

    • "+" indicates accommodation of larger cup sizes
    • If between sizes, we recommend sizing up
    • If you have a larger cup than indicated with the underbust, size up
Size
Underbust
Bust
Cups
XS
26.5-27.5"
28.5-31.5"
A
S
28-29"
31.5-34.5"
A-B
S+
28-29"
34-36"
C-D
M
30-31"
34-36"
B-C
M+
30-31"
36.5-38.5"
D-E
L
32-34"
35.5-38.5"
B-C
L+
32-34"
39-42"
D-E
XL
35-37"
39-42"
C-D
XL+
35-37"
42.5-46.5"
E-F
2XL
38-41"
43-46"
C-D
2XL+
38-41"
47-51"
E-F
3XL+
42-45"
51-55"
F

Sizing Tips:

  • "+" indicates accommodation of larger cup sizes
  • If between sizes, we recommend sizing up
  • If you have a larger cup than indicated with the underbust, size up

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An organic cotton wireless bra in cacao brown color with adjustable straps
Global Organic Textile Standard
Global Organic Textile Standard

Lola is a 44DD, wearing a Subset 2XL+

Hannah is a 36D, wearing a Subset L

Maya is a 33C, wearing a Subset S

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See it on:
4.3
Rated 4.3 out of 5 stars
1,231 Reviews

Organic Cotton
Triangle Soft Bra

Any 2 soft bras for $115
$62 for 1
  • Triangle cups
  • Medium support
  • Adjustable band + straps
Size:
More Cup Room

Color:

Core
Limited
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+

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Ships in 1 to 2 Business Days

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Made with Organic
Cotton

Breathable and
Moisture-Wicking

Recyclable through
Subset's Program

Eco-Friendly and Sustainable Materials

Complete The Set
An organic cotton mid rise brief in carbon black color.
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Organic Cotton Mid-Rise Brief in Carbon
$20
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A mid-rise bikini in marine blue color.
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Organic Cotton Mid-Rise Bikini in Marine
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Organic Cotton High-Rise Brief in Cacao
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A mid rise bikini in spice brown color.
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Organic Cotton Mid-Rise Bikini in Spice
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A mid rise bikini in wheat beige color.
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Organic Cotton Mid-Rise Bikini in Wheat
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A high-waisted light pink quartz brief made from organic cotton.
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Organic Cotton High-Rise Brief in Quartz
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A low-rise organic cotton women's brief in a gale blue color.
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Organic Cotton Low-Rise Brief in Gale
$15 $20
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Low Rise Thong - Black - Knickey Organic Underwear
2XS
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Organic Cotton Low-Rise Thong in Carbon
$20
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Organic Cotton Mid-Rise Shortie in Marine
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A mid-rise hipster underwear in cacao brown color.
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Organic Cotton Mid-Rise Hipster in Cacao
$20
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Low Rise Thong - Light Brown - Knickey Organic Underwear
2XS
XS
S
M
L
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Organic Cotton Low-Rise Thong in Spice
$20
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Organic Cotton Mid-Rise Brief in Stone
$20
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Organic Cotton Mid-Rise Shortie in Wheat
$20
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Organic cotton mid-rise thong in a quartz light pink color.
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Organic Cotton Mid-Rise Thong in Quartz
$20
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Organic Cotton Mid-Rise Bikini in Marine
$20
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Organic Cotton Triangle Soft Bra
-
+
  • Description

    The Triangle Soft Bra is our bestselling organic cotton bralette style with better structure and expanded cup sizes. You'll hardly believe the support of this wireless bra and the comfort of our signature organic cotton. Darted cups come double-lined and center-seamed, with a sturdy back closure for adjustability. Get ready to reach for it on repeat. 

  • Fit Details

    Cut: Moderate
    Support: Medium
    Adjustability: Band & Straps 

    • Triangle shaped cups give partial chest coverage
    • Good hold from darted, double-lined cups, giving lift without bulk
    • 3-row hook & eye closure at back for adjustability
    • Adjustable shoulder straps
    • 2 size ranges based on cup volume
  • Materials & Care

    Fabric: 95% Certified Organic Cotton, 5% Elastane
    Straps: 70% Recycled Polyester, 30% Spandex
    Hardware: Recycled Zinc & Alloy 
    Band: 100% Recycled Polyester & Natural Rubber
    Closure: 78% Regenerated Nylon, 22% Elastane

    Wash in cold water and hang dry to save energy and extend the life of your bra. Earth-friendly detergents are highly recommended.

  • Shipping & Returns

    Shipping

    • Free shipping on US orders over $75
    • US Flat Rate shipping of $5 or $8, depending on order size
    • Carbon-Neutral shipping

    Returns

    • First Pair Guarantee on all underwear
    • Free exchanges and returns to store credit
    • Returns to refund with a $8 return shipping fee
    • Pre-paid shipping labels provided to US orders 
    • Easy-to-use online Returns Portal

    For more information on shipping, returns, & international orders swing by our FAQs

  • Impact

    This Product's Impact

    1.5 kg of emissions offset

    226.4 glasses of drinking water saved

    5.6 sq ft of land saved from pesticides

  • End of Life

    We take responsibility for the full lifecycle of our products, but we don’t stop there. We started the world’s first intimates Recycling Program to divert items from any brand, Subset or not.

    At the end of this product's life, you can recycle it here.

The Triangle Soft Bra is our bestselling organic cotton bralette style with better structure and expanded cup sizes. You'll hardly believe the support of this wireless bra and the comfort of our signature organic cotton. Darted cups come double-lined and center-seamed, with a sturdy back closure for adjustability. Get ready to reach for it on repeat. 

Description

The Triangle Soft Bra is our bestselling organic cotton bralette style with better structure and expanded cup sizes. You'll hardly believe the support of this wireless bra and the comfort of our signature organic cotton. Darted cups come double-lined and center-seamed, with a sturdy back closure for adjustability. Get ready to reach for it on repeat. 

Fit Details

Cut: Moderate
Support: Medium
Adjustability: Band & Straps 

  • Triangle shaped cups give partial chest coverage
  • Good hold from darted, double-lined cups, giving lift without bulk
  • 3-row hook & eye closure at back for adjustability
  • Adjustable shoulder straps
  • 2 size ranges based on cup volume
Materials & Care

Fabric: 95% Certified Organic Cotton, 5% Elastane
Straps: 70% Recycled Polyester, 30% Spandex
Hardware: Recycled Zinc & Alloy 
Band: 100% Recycled Polyester & Natural Rubber
Closure: 78% Regenerated Nylon, 22% Elastane

Wash in cold water and hang dry to save energy and extend the life of your bra. Earth-friendly detergents are highly recommended.

Shipping & Returns

Shipping

  • Free shipping on US orders over $75
  • US Flat Rate shipping of $5 or $8, depending on order size
  • Carbon-Neutral shipping

Returns

  • First Pair Guarantee on all underwear
  • Free exchanges and returns to store credit
  • Returns to refund with a $8 return shipping fee
  • Pre-paid shipping labels provided to US orders 
  • Easy-to-use online Returns Portal

For more information on shipping, returns, & international orders swing by our FAQs

Impact

This Product's Impact

1.5 kg of emissions offset

226.4 glasses of drinking water saved

5.6 sq ft of land saved from pesticides

End of Life

We take responsibility for the full lifecycle of our products, but we don’t stop there. We started the world’s first intimates Recycling Program to divert items from any brand, Subset or not.

At the end of this product's life, you can recycle it here.

See how we compare

Organic Cotton Undies Organic Cotton Undies Celebrity-Founded Lingerie Line Celebrity-Founded Lingerie Line One-Size-Fits-All Stretch Lace Panties One-Size-Fits-All Stretch Lace Panties
Fiber Content GOTS Certified Organic Cotton Petroleum-Based Plastic Blends Petroleum-Based Plastic Lace
No Microplastics Yes Plant-Based Natural Fiber No No
Non-Toxic Yes PFAs Free No No
Performance Breathable + Moisture Wicking Traps Heat + Moisture For Display Only
Reviews 4.9 4.7 4.7
Size Range 2XS - 4XL 2XS - 4XL "One-Size-Fits-All"
Care Machine Washable Hand Wash Only Hand Wash Only
Take Back Program Yes Circular Supply Chain No No

FAQs

How much support does the Triangle Soft Bra offer?
+

The Triangle Soft Bra offers medium support. Darted, double-lined cups create good hold and gentle lift without any bulk or underwire, so it's built for everyday comfort rather than high-impact workouts.

What if I fall between sizes or need a bigger cup in the Triangle Soft Bra?
+

Our Soft Bra sizing runs XS to 3XL+, with "+" sizes built specifically for larger cups at the same band size. For example, an M fits a B-C cup, while an M+ fits a D-E cup at the same underbust measurement. If you're between sizes, or your cup runs larger than your underbust measurement suggests, we recommend sizing up.

Is the Triangle Soft Bra adjustable?
+

Yes. A hook-and-eye back closure (2 rows on standard sizes, 3 on + sizes) along with adjustable shoulder straps let you fine-tune the fit as your body changes. That sets it apart from pullover bralette styles, which have no band adjustability.

What is the Triangle Soft Bra made of?
+

The body is 95% certified organic cotton and 5% elastane. The trims are just as thoughtful: the straps are 70% recycled polyester and 30% spandex, the band is 100% recycled polyester and natural rubber, and the back closure is 78% regenerated nylon and 22% elastane. Every fiber is GOTS-certified, so it's grown and processed without pesticides or PFAS.

How do I wash the Triangle Soft Bra so it lasts?
+

Wash in cold water and hang dry to protect the elastane and extend its life. Skip the bleach, and an earth-friendly detergent is recommended. Stocking up? 2 Soft Bras are $115, so it's an easy way to always have a clean one in rotation.

Keyhole Soft Bra vs. Triangle Soft Bra: what's the actual fit difference?
+

Both offer moderate coverage, medium support, a hook-and-eye back closure (2 rows on standard sizes, 3 on + sizes), adjustable straps, and the same Soft Bra size range. The difference is entirely in the cup shape: the Keyhole has a scoop silhouette with a cutout detail, while the Triangle has structured triangle cups. Pick based on the look you want, not the fit.

What does GOTS-certified mean?
+

GOTS stands for the Global Organic Textile Standard, the leading certification for organic textiles. It means every step of our supply chain, from growing the cotton to dyeing and sewing the final product, is verified free of pesticides, toxic dyes, and PFAS, with fair labor standards enforced along the way.

Shop the Look

Organic Cotton Triangle Soft Bra in Carbon
Organic Cotton Triangle Soft Bra in Carbon
Organic Cotton Mid-Rise Thong in Carbon
Organic Cotton Mid-Rise Thong in Carbon

Committed to organic cotton excellence

Fit First

First layers that are built for body and easy on the earth - because you deserve a drawer full of faultless essentials that are compromise-free.

Certified Sustainable

Organic cotton’s growth, harvest, and manufacturing processes are safe for farm and factory workers and are kind on Earth’s water and land.

Fair Trade

Our factories are Fair Trade certified to ensure everyone involved in the making of our products is treated with the respect and care they deserve.

Free Returns

Carbon-neutral shipping

Easy Exchanges

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Free Exchanges, Easy Returns

Reviews

4.3
Rated 4.3 out of 5 stars
Based on 1,231 reviews
80%would recommend these products
Write a Review (Opens in a new tab)
1,231 reviews
  • Barbara M.
    Flag of United States
    Verified Buyer
    Reviewing
    Organic Cotton Triangle Soft Bra in Cacao
    I recommend this product
    Age Range 65+
    Size Purchased M
    I usually wear 36, C
    Rated 5 out of 5 stars
    4 minutes ago
    Organic cotton in cacao

    Love it still. I've had other Subset / Knickies and find them the most comfortable I've worn. Cacao is a nice color but would love to see more options introduced. All good!

    FitRated 0.0 on a scale of minus 2 to 2
    ComfortRated 0.0 on a scale of minus 2 to 2
    SupportRated 0.0 on a scale of minus 2 to 2
    Was this helpful?
  • Barbara M.
    Flag of United States
    Verified Buyer
    Reviewing
    Organic Cotton Triangle Soft Bra in Spice
    I recommend this product
    Age Range 65+
    Size Purchased M+
    I usually wear 36, C
    Rated 5 out of 5 stars
    6 minutes ago
    Soft Bra

    Most comfortable bras I've had and will continue to buy mine from Subset. Still like the old name... Knickie.

    The color spice is also nice.

    FitRated 0.0 on a scale of minus 2 to 2
    ComfortRated 0.0 on a scale of minus 2 to 2
    SupportRated 0.0 on a scale of minus 2 to 2
    Was this helpful?
  • Martha L.
    Flag of United States
    Verified Buyer
    Reviewing
    Organic Cotton Triangle Soft Bra in Spice
    I recommend this product
    Age Range 55-64
    Size Purchased L
    I usually wear 36
    Rated 5 out of 5 stars
    3 days ago
    love this

    love the fit and natural feel while fully supportive!

    FitRated 0.0 on a scale of minus 2 to 2
    ComfortRated 0.0 on a scale of minus 2 to 2
    SupportRated 0.0 on a scale of minus 2 to 2
    Was this helpful?
  • Elena M. S.
    Flag of United States
    Verified Buyer
    Reviewing
    Organic Cotton Triangle Soft Bra in Spice
    I recommend this product
    Age Range 35-44
    Size Purchased M
    I usually wear 32, C
    Rated 5 out of 5 stars
    3 days ago
    I thought I only wanted underwire, molded cups...

    I did a deep dive into bras made with as little plastic as possible and am glad I ended up at Subset. A lot of options out there have only one layer of fabric or were just unflattering. This triangle bra has the right amount of fabric thickness in the cups and looks great- I look forward to wearing it. I wasn't sure I would like the seams or the thicker straps but these features give the bra a kind of classic vintage look in a modern color. It was a bit of a journey to find my size since I am accustomed to traditional underwire molded cups and Subset offers the + cup sizes- I tried EVERYTHING from S+ to L and ended up with M. I recommend the search though plus Subset's customer service was helpful.

    FitRated 0.0 on a scale of minus 2 to 2
    ComfortRated 0.0 on a scale of minus 2 to 2
    SupportRated 0.0 on a scale of minus 2 to 2
    Was this helpful?
  • Christie H.
    Flag of United States
    Verified Buyer
    Reviewing
    Organic Cotton Triangle Soft Bra in Carbon
    I recommend this product
    Age Range 45-54
    Size Purchased M
    I usually wear 34, B
    Rated 5 out of 5 stars
    4 days ago
    Super Soft

    Love the feel of this bra. Super soft and comfortable to wear. Only drawback is that the sizes seem to run a bit small. I had to go a size up from the recommended

    FitRated -1.0 on a scale of minus 2 to 2
    ComfortRated 0.0 on a scale of minus 2 to 2
    SupportRated 0.0 on a scale of minus 2 to 2
    Was this helpful?

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