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Plunge Bra | Sienna comfortable wireless bras, womens bras made of TENCEL modal plunge halter bra, sustainable bras, plunge bralette iteration
Plunge Bra | Sienna comfortable wireless bras, womens bras made of TENCEL modal plunge halter bra, sustainable bras, plunge bralette iteration
Plunge Bra | Sienna comfortable wireless bras, womens bras made of TENCEL modal plunge halter bra, sustainable bras, plunge bralette iteration
Plunge Bra | Pink Sand comfortable wireless bras, womens bras made of TENCEL modal plunge halter bra, sustainable bras, plunge bralette iteration
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Plunge Bra | Sienna comfortable wireless bras, womens bras made of TENCEL modal plunge halter bra, sustainable bras, plunge bralette iteration

Plunge Bra | Sienna

TENCEL™ Modal, Wirefree Bra, Deep V-Neckline, Wireless Bra, Adjustable band, Tagless, Hypoallergenic, and Community-Designed

4.8
Rated 4.8 out of 5 stars
20 Reviews
color – Sienna

Find your iteration size

Size Chart

Take the Plunge!

Step into a world of distinct style with our iconic Plunge Bra, an option perfect for pairing with your favorite V-neck outfits.

✓ MAGIC STRAPS | wide, supportive straps, adjustable for halter-style racerback
✓ DEEP PLUNGE | lowest-cut neckline that plays nice with v-necks'
✓ DREAMY FABRIC | buttery soft TENCEL™ Modal (2x softer than cotton)
✓ NO PADDING | no bulky foam, no annoying pads to remove, no gaping cups, just unlined bliss
✓ INNER SLING, NO UNDERWIRE | iteration’s mesh internal sling for extra lift + support
✓ NO UNI-BOOB | defined cups add extra separation of breasts

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Return Policy
Plunge Bra | Sienna comfortable wireless bras, womens bras made of TENCEL modal plunge halter bra, sustainable bras, plunge bralette iteration
Plunge Bra | Sienna comfortable wireless bras, womens bras made of TENCEL modal plunge halter bra, sustainable bras, plunge bralette iteration
Plunge Bra | Sienna comfortable wireless bras, womens bras made of TENCEL modal plunge halter bra, sustainable bras, plunge bralette iteration
Plunge Bra | Pink Sand comfortable wireless bras, womens bras made of TENCEL modal plunge halter bra, sustainable bras, plunge bralette iteration
Plunge Bra | Sienna
Plunge Bra | Sienna comfortable wireless bras, womens bras made of TENCEL modal plunge halter bra, sustainable bras, plunge bralette iteration
FREE + EASY RETURNS OR EXCHANGES
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FREE SHIPPING ON $70 OR MORE
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Plunge – Our Lowest Neckline

Need to Know Details

MADE FOR COMFORT  |  breathable modal fabric that feels like a second skin
HIDDEN SLING SUPPORT  |  support to gently lift and shape without wires
DEEP PLUNGE NECKLINE  |   our most dramatic look for your low cut tops + dresses
ADJUSTABLE STRAPS  |  to adjust your strap length more easily; partially adjustable
LOW PROFILE SLIDERS  |  to create less bulkiness at your shoulders
CONVERTIBLE J-HOOK  |  turn straight straps into a racerback to maximize wearability
WIDE BOTTOM BAND  |  fabric covered for ultra comfort
DOUBLE-LINED  |  for a super soft feeling both inside and out
COLORS  |  Pink Sand, Sienna, Mahogany, Onyx

Materials + Composition

OUTER + INNER BODY  |  94% TENCEL™ Modal + 6% spandex
INNER SLING  |  87% nylon + 13% elastane
SOFT + WIDE "MAGIC" STRAPS  |  ¾” wide with ultra comfortable reduced stretch elastic
MATTE GOLD HARDWARE  |  for a little extra glam in your bra wardrobe
PADDED HOOK & EYE  |  with 4 rows of adjustment for size flexibility
PRODUCTION  |  made with 💜 in a small + ethical factory in Sri Lanka; designed in USA

Care Instructions

WASH  |  machine wash cold
LINE DRY  |  hang dry to save energy
MACHINE DRY  |  if machine drying, tumble dry on low
STAINS  |  only non-chlorine bleach as needed

Returns + Exchanges

Fit Matters. We’ve Got You.

Comfort and fit are everything, especially when it comes to bras+ undies. Helping you discover your next era of intimates is our jam, made easy for you with free returns and exchanges.

Returns of unwashed, unworn items with the tags on are accepted for 30 days and will be refunded to the original form of payment. See our Returns Policy for more details.

Still have questions? Not a problem! 

For style suggestions, take our Bra Quiz

For bra sizing, check out our custom Measuring and Calculator

Still have questions? Shoot us an email at hi@iterationera.com and we can personally assist to ensure you're fitted perfectly!

WIRELESS SUPPORT

Lift + Shape without compromise

Our hidden LiftLayer covers the entire cup to gently lift + support, while the ShapingLayer, discreet inner sling, contours your bust for a smooth, naturally rounded profile.

Mid-Rise Hipster | Mahogany women's underwear, mid-rise hipster, full coverage panties iteration

About Our Fabric

94% TENCEL™ Modal + 6% spandex

We dig our fabric for many reasons, here's just a few of our top favorites:

2X softer than cotton, tough enough for all day adventures

Natural material made sustainably from regenerative beech trees

50% more absorbent than cotton with odor resistance

Wireless Bras and Elastic Free Underwear

COSMETIC NEUTRALS

Beautiful nudes for many skin tones

Our carefully curated palette celebrates the beauty of neutral nudes, offering a spectrum of makeup-inspired shades that flatter all skin tones.

Reviews

4.8
Rated 4.8 out of 5 stars
Based on 20 reviews
Total 5 star reviews: 16 Total 4 star reviews: 4 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend these products
Slide 1 selected
20 reviews
  • AH Profile picture for Amber H.google logo
    Amber H.
    Verified Buyer
    Reviewing
    Plunge Bra | Pink Sand
    I recommend this product
    Age Range 35-44
    Size Purchased L
    Rated 5 out of 5 stars
    I won't buy another brand!

    This bra is so beautiful with the gold hardware and color! The cut is perfect for any top and so supportive with no underwire! This bra makes my breasts look so nice and shapely. Super soft material and I'm loving the j-hooks in the back!!!

    I Profile picture for iteration
    iteration
    Oct 8, 2024

    Thank you so much, Amber!! We appreciate your feedback and we can't wait to make more styles for you to love!!

  • CA Profile picture for Courtney A.facebook logo
    Courtney A.
    Verified Reviewer
    Reviewing
    Plunge Bra | Mahogany
    I recommend this product
    Age Range 25-34
    Size Purchased XL+
    Rated 5 out of 5 stars
    Unleash Your Inner Goddess

    WOW!

    Just wow is all I can say.

    This was my most anticipated purchase and when the package came you can bet your bottom I stripped and put it on immediately. I had my doubts, as a 40E, things like this usually end in spillage and wardrobe malfunctions... but as I looked at myself in the mirror I was blown away. As a momma with some frumps from a bad c-section and some self-image issues because of all that goes with that, I felt incredibly sexy for the first time in over 2 years, Yes, that's incredibly vulnerable, but that was my first impression, outside of holy wow, this is the prettiest bra I've ever seen.

    Now, it is a plunge bra, it is supportive and gives voluptuous shape (never thought I'd say that), but don't go playing extreme sports, it's just not designed for that kind of territory. The placement and width of the straps makes it incredibly comfortable and the fabric is so soft, it is the stuff of dreams. You will forget you are wearing a bra and say goodbye to strap slips.

    One downside to this style is the width of the bra straps and the strap placement. They are incredibly comfortable, but become visible with certain styles of tops, I only have a shirt and one dress I had this issue with, so it's not major and I certainly would not change it because the comfort for me outweighs anything, But I know for some gals, that's good info to know.

    That being said, this is my most favorite bra now and I want 10. lol.

    This one is a traditional back adjustment for the…

    I Profile picture for iteration
    iteration
    Feb 25, 2025

    Wow, just wow! 🤩

    Your review truly blew us away. Knowing that our plunge bra made you feel sexy and confident after everything you’ve been through means more than we can say. Thank you for sharing such a vulnerable and powerful moment with us—it’s why we do what we do. 💜

    We’re thrilled to hear that the comfort, softness, and support were exactly what you needed. And thank you for the honest feedback about the strap placement—we appreciate your insight and are always looking to improve.

    Your words mean the world to us. We appreciate your support and for letting us be part of your journey. We’re cheering you on every step of the way!

    Thank you for being so open and willing to share your experience with our community, Courtney!!

  • S
    Susan
    Reviewing
    Plunge Bra | Pink Sand
    I recommend this product
    Age Range 65+
    Size Purchased L
    Rated 5 out of 5 stars
    Fabulous bra!

    This bra is “ all that and a bag of chips”! I have seriously NEVER had a bra with straps that stayed up on my sloping shoulders… they did it! Magic straps for the win. Soft, comfortable, pretty fabric. This bra is great.

  • MJ
    Melissa J. C.
    Verified Buyer
    Reviewing
    Plunge Bra | Pink Sand
    I recommend this product
    Age Range 45-54
    Size Purchased S
    Rated 5 out of 5 stars
    I almost returned, but could not resist the comfort

    I am always looking for a plunge that actually does not show with a low cut top. This fits that bill! The plunge drops all the way down instead of rounding out like a lot of bras, still showing under a shirt. The kicker, even though there is a plunge, you won't fall out. The bra holds you in nicely. These do have a lot more material than I am used to. The straps are thicker than I would like with a tank top. There is less material in the plunge but more along the sides and 3 hook back where I have never had more than a 2 hook. All that said, my straps don't slide down, not because I have them so tight, they make their own indent, but because the shape of the bra does not allow the straps to slip down. The extra material I was worried about showing in tops actually helps to cover up/hold in that problem area where your chest, arm and armpit meet. Overall it is a very flattering undergarment that you don't want to rip off the second you get home.

  • CH
    Cynthia H.
    Verified Buyer
    Reviewing
    Plunge Bra | Onyx
    I recommend this product
    Age Range 55-64
    Size Purchased S+
    Rated 4 out of 5 stars
    Comfortable wire-free bra

    True to size: bra comes in band size categories XS, S, M, L, etc. and each band size category has a "plus" option. In wired bras I wear 32DD or 32DDD/E, so based on the website sizing chart I bought Small Plus (S+). The fabric is smooth all around and feels good. The straps are adjustable, with metal hardware that looks and feels durable and like higher-quality than hard plastic on some bras. I did have a little trouble with strap slipping off one shoulder, which I have with many bras, but I just noticed the J-hook provided on the strap hardware so I will try fastening that next time to see how that feels

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