Balance Sport Bra

# 381 | Women's
Merino seamless sport bra

  • Merino seamless sport bra


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The Ibex Promise
We’re committed to uncompromising craftsmanship and to your satisfaction. If you are unsatisfied for any reason, return your purchase within 60 days with proof of purchase to receive an exchange, repair, or refund. It's our promise.

The most rugged of the Ibex bra collection, the seamless Balance Sport Bra is supportive enough for the sweatiest adventures, but comfortable enough to wear all day. Constructed of a mix of soft Merino and synthetics, this bra is a powerhouse at moisture management.

Tech Specs +

 Form Fit Runs small, please size upFit Guide
Wool Gauge:
 17.5 micron
Fabric Gram Weight:
Garment Weight:
 0.14 oz
Fiber Content:
 72% Wool, 22% Nylon, 6% Spandex
Fiber Source:
Fabric Source:
Garment Source:

Wool Type +


If textile construction was based solely on survival of the fittest, IbexÕs Balance fabric would pummel evolution. Made of a combination of the three top performance fibers, this fabric hybrid combines the best of all worlds. Wool for breathability, durability, softness, and odor management. Lightweight spandex and nylon for strength, stretch, fit, and support. Seamless Merino Undergarments

It Starts With Free Range New Zealand Merino Sheep
It Starts With Free Range New Zealand Merino Sheep
Understanding the Micron
Understanding the Micron

Size & Fit Guide Expand +

How Do I Determine My Size?

We recommend a general body measurement guide to determine your size in Ibex clothing. This sizing chart is not garment specific, but in fact a body measurement chart. Here are some helpful hints when measuring:

Bust/Chest: relax arms at sides, keeping the tape parallel to the floor, measure the fullest part of your bust/chest
Waist: keeping the measuring tape comfortably loose, measure around your natural waistline
Hips: standing with heels together, keep the tape straight and parallel to the floor, measure around the fullest part of hips
Sleeve Length: a 3-point measurement, standing with arms relaxed and slightly bent at sides, measure from the base of the neck to the shoulder and then from the shoulder to the wrist bone, add together measurements
Form-fit: garment designed to fit snug to the body throughout
Semi-fit: garment will be contoured to the body
Regular-fit: garment will not be slim, but also not oversized
Relaxed-fit: garment drapes loosely on body

Still need help determining your size? Call 800.773.9647 or email us at for specific garment measurements.

Q&A and Reviews

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Browse 11 questions Browse 11 questions and 93 answers
Why did you choose this?
Ibex Outdoor Clothing Store
I have heard great things
Megan R on Feb 2, 2016
Medium fits great - think there has been a lot of confusion about the sizing on this bra. I wear this style 90% of the time year round. Incredibly comfortable I'm a 34 C/D Tried the large this time and it was too big. Medium is perfect.
Elaine M on Jan 31, 2016
I have heard great things
Megan R on Feb 2, 2016
need a new excercise bra and should also be good for travel
susan m on Feb 2, 2016
Medium fits great - think there has been a lot of confusion about the sizing on this bra. I wear this style 90% of the time year round. Incredibly comfortable I'm a 34 C/D Tried the large this time and it was too big. Medium is perfect.
Elaine M on Jan 31, 2016
good for travel
Rebecca S on Jan 29, 2016
Had to return a sports bra that was too small, and exchanged for a size larger. It is perfect so I felt I had to order another since Ibex has a great sale on.
Sweetness on Jan 27, 2016
I love merino sports bras - they don't smell like synthetics - even after wearing them 3 days in a row mountain biking!
comtngirl on Jan 27, 2016
After reading other women's reviews, I am hoping this item will work well for me.
Hawaiian Trekke on Jan 20, 2016
daughter uses these beneath your clothing she is outside for her work
judith c on Jan 18, 2016
Needed a new sports bra. Wanted one that was sustainable.
Froya O on Jan 15, 2016
I already have one and love it!
marta t on Jan 15, 2016
Looking for moderate support that will wick well and not develop perma-stink.
Shannon T on Dec 24, 2015
Love the ibex brand. For my sister in law who runs marathons.
Katie R on Dec 10, 2015
already own 4, so comfortable, great for outdoor work in summer
Linda H on Dec 9, 2015
I currently have this bra that I bought for hot yoga but now its my 'go to' for running. It does a great job of wicking the sweat away and is very comfortable. It's the only bra I want to run in.
Guest S on Dec 8, 2015
great tone for wearing under white
Jama B on Dec 5, 2015
The best underwear for a cross country ski coach that periodically gets sweaty and stands around all day long in the cold!
Maria S on Dec 5, 2015
I just bought a black one and have been wearing it around the house for 2 days and have rarely found a sports bra that is so comfortable and yet supportive.
Rebecca B on Dec 1, 2015
recommended by my daughter
Cynthia W on Nov 30, 2015
very comfortable
Karen A on Nov 30, 2015
love my wool discontinued ;-((
trying this
patricia h on Nov 27, 2015
BEST bra I've found for yoga.
Robin H B on Nov 11, 2015
I have the same bra in black and I love it. Just wanted another one.
Susan C on Oct 26, 2015
Love this bra. Only bra that keeps me warm and dry after a long skin up the mountain on cold days.
Kristin H on Oct 22, 2015
My current sports bra becomes uncomfortable so it is time to try something new.
Carol C on Oct 21, 2015
I hate bras, I have worn your camisoles in the past but they don't seem to be available anymore. I hope this fits, it may be too tight.
Megan P on Oct 18, 2015
Best and only sports bra I'll wear in the fall/winter - no sweaty, cold, clinging cotton!
Watercat on Oct 10, 2015
Looking for comfort and function.
Anne B on Oct 10, 2015
best sports bra ever
stacy h on Oct 8, 2015
Love this bra. Wear it all the time, even use it to swim in.
Melissa H on Oct 2, 2015
I'm looking for a comfortable, versatile, well-made bra that will go the extra mile when I do.
Renee G on Sep 29, 2015
I found the bralette straps too tight and the bra too small overall, hoping this one fits a 34C better
Emily H on Sep 23, 2015
best choice for long hiking trip
Ann P on Sep 18, 2015
Great reviews, looks comfy.
Guest S on Sep 16, 2015
easy care, long-lasting, fun colors - these are my fave bras!
Julie V on Sep 15, 2015
Hate synthetic fabrics. Comfort. Have 2 other Ibex sports bras.
Danielle W on Sep 11, 2015
good comfy coverage to wear under plunging necklines
Anne D on Sep 9, 2015
Love the black one, so want one to wear under light clothes.
anne m on Sep 7, 2015
It is wool!
Wooly in PA on Sep 4, 2015
Just wanted something comfortable.
jan m on Aug 31, 2015
Hiking the AT in March, need to get my base layer.
Lisa H on Aug 30, 2015
stays put and keeps you dry
Danette L on Aug 30, 2015
I got one for my daughter and she loves the comfort this sport bra provides. She hikes and does ballet in it. Her favorite. Needed one for myself. I love it as well. So comfortable. Easy to move in and provides plenty of support.
Kimberly N on Aug 23, 2015
Because I really love this sports bra
Pia V on Aug 21, 2015
One of my friends recommended them
elizabeth z on Aug 18, 2015
looking for the perfect ski bra. supportive, warm, natural fibers
Lauren W on Aug 13, 2015
It was recommended as a comfortable sports bra.
Ashley F on Aug 12, 2015
I have 3 of these that I wearing for years for an everyday bra year round. Can't go back to a standard bra.
Michele K on Aug 2, 2015
I love the way the fabric stretches around my shape. This is one of the most comfortable, faltering sports bras I have found for my 32D boobs.
Kristen J on Jul 29, 2015
The wool shelf bra cami isn't available anymore. Loved the pearl gray underwear color (especially in the tanks. The beige this year isn't my favorite...)
Tessa L on Jul 24, 2015
Need a new bra, willing to try this one.
DeAnn A on Jul 22, 2015
need a new excercise bra and should also be good for travel
susan m on Feb 2, 2016
good for travel
Rebecca S on Jan 29, 2016
Does it have a pad? If not, does it show the nipples?
A shopper on Oct 3, 2015
BEST ANSWER: no pad and yes you can see nipple, but it is very comfortable
This is exactly what I want, but, alas, Large will not fit. Does this ever come in Extra Large, and/or does anyone know if Ibex plans to include XL in the future? Thanks!
A shopper on Aug 26, 2015
BEST ANSWER: Hello at this time the Balance Sport Bra is not being made in XL. We have passed the info on to the Designers so hopefully in the future they will make them in XL. Thanks
the note on this item says they tend to run small. I have ordered these in previous years. Are they the same fit as previous years or smaller fit? I was going to order quite a few so would like to be sure before hand to save us both the trouble, thank you.
A shopper on Apr 22, 2015
BEST ANSWER: I wear a 34A bra and I ordered a Medium in this Ibex sports bra. It fits me great. Definitely my favorite and most comfortable fit.
Is this bra supportive enough for larger chested women doing high impact sports?
A shopper on May 26, 2015
BEST ANSWER: I would say not. This does not have a lot of support in terms of compression or in terms of holding things in place. There are no foam cups and no strong elastic bands. It is very comfortable just doing regular daily activities or for hiking. I would not rely on this for high impact activities.
Does it shrink after washing? Is this compressive?
JaneA on Oct 12, 2015
W's Balance Sport Bra
W's Balance Sport Bra
W's Balance Boy Short
W's Balance Boy Short
BEST ANSWER: It does constrict some after washing, but since I don't put them in the dryer, I don't know if I can fully answer the question about shrinking. I have accidentally put other merino pieces in the dryer without any shrinking, so even though I wouldn't suggest doing it regularly, I doubt you'll do any serious damage either. The material isn't compressive, so even though they fit true to size, if you want them to be super tight I would suggest buying a size smaller than what you normally wear.
Would this bra be supportive enough for high impact sports such as running for a medium to large C cup? If not, do you offer any bras that are?
A shopper on Dec 1, 2015
BEST ANSWER: I'm an A cup and these bras are perfect, however my daughter, who is a generous C cup (and fits women's medium generally), found that this bra (I got her a L) did not have enough support, even for lower impact activities. I wish Ibex would offer an XL - that might do the trick for her.
Will you be carrying the regular balance bra again (with pads)? Would it be possible to insert pads into this version?
Em on Nov 3, 2015
BEST ANSWER: Hi there, we will have the Balance Bra but it does not include the pads. There is no pocket for pads on the current version, you'd have to alter it somehow, which would void our warranty.
I will pass along your interest to the designers.
When will you have large available again in black?
A shopper on Nov 5, 2015
BEST ANSWER: Hi there, we are indeed sold out of the black/large, however, the Seattle Ibex shows several in stock! They would be happy to send one to you. Please give them a call at 206-525-0364
ey say "PLEASE NOTE: These tend to run small, size up one size.", But does it run smaller than the sizing chart that accompanies it (or is the sizing chart accurate?)
ad m on Aug 3, 2015
BEST ANSWER: Hi there, yes, I would still size up as our bras are very form fit.
Is the nylon and the spandex all throughout the fabric or only on the band?
lorena b on Jul 17, 2015
BEST ANSWER: Hello the nylon and spandex is all throughout the fabric. Thanks
4.8 / 5.0
13 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Band runs small
I love these bras - I have 5 so far. I first ordered a medium because I am a 36B but I found the band too tight for comfort. My later purchases were size Large and is much more comfortable. I have no issue with the cup being too large because the knit fits very well and doesn't bag.
August 27, 2015
6 months ago
Most Comfortable Sports-Bra
I have a small ribcage, but large breasts (32G, British sizing) and so I have a really hard time finding comfortable bras, much less sports bras. This bra actually supports me (not smashes)! I bought a large, and it fits great. I do wish the band was a little wider, so it wouldn't be as prone to rolling up on the front edge, but that's my only complaint. It's great to find a bra that doesn't leave any red marks or dents! I wouldn't run in it, but it's great for everyday activities and yoga.
August 27, 2015
5 months ago
The Best!
I absolutely love this sports bra. I am incredibly small chested and use this bra for cycling. Even when hot, hot, hot, this bra wicks away moisture and never smells. I cannot wait to buy another.
October 4, 2015
4 months ago
Great for long runs!
I love this bra - supportive enough for running if you're a B cup. I can run for 3 hours in hot conditions with no chafing. I always save this one for my long run! Time to order more!
July 29, 2015
Fantastic sport bra!
I love this sport bra! It is the best fitting, most comfortable one I have ever found! It is lightweight, soft, and supportive for a B cup. It is cool in hot weather, and doesn't retain smell. I have not yet washed it, so can't speak to how it washes. I bought this in black, and wanted to get more, but have had a hard time finding one. Ibex, keep them coming!
June 25, 2015
8 months ago
Great! I am small but a large strong back. I wear a large and it is the best, warmest, most comfortable I have ever had.
May 22, 2015
comfortable support, breathes well. Ordered it wear canyoneering
Bra does not bind or have any pressure points. Lower area around rib cage is comfortable and gives with each breath.
August 11, 2015
6 months ago
warm and comfortable
I am often chilled because my bra stays wet after working up a sweat while canoeing/kayaking, or if I get caught without my rain jacket. Being wool, this bra stays cozy and I dont get chilled. Very comfortable while providing moderate support (does not provide adequate support for high impact sports for large-busted women). I love it! It will also be good for ski season- I plan to l get one for my daughter for her hiking/canoing/skiing activities.
August 30, 2015
6 months ago
Comfort and support
This bra breathes well, fits comfortably, and works great for low impact sports- climbing, cycling, yoga, etc.
January 2, 2016
1 month ago
comfort in a sport bra? yes!
This sport bra can be worn for hours before your sport event. it is comfortable enough for all day, really. Even after a good sweaty workout, I am not in a mad rush to take this off, as is true with other sport bras. The breathability of the fabric is key to the comfort. The support was perfect for an active zumba class.
November 4, 2015
3 months ago