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.

Natural Performance

For serious workouts, dawn-to-dusk hike adventures, and long biking loops, make sure you start with the Balance Sport Bra. Made of a highly breathable mix of Merino, nylon, and spandex, for you’ll want this moisture-managing-champion next to your skin when you know you’re gonna sweat.

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, Ibex's 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.

Customer Photos and VIdeos

Q&A and Reviews

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Browse 12 questions Browse 12 questions and 96 answers
Why did you choose this?
Ibex Outdoor Clothing Store
I have been wearing Ibex bras for last 4 years and love them. I don't think I've tried this style and it might not work cause I usually need to let out the adjustability of my bras quite a bit. But hoping I like the fit. The main reason I'm t trying this style is cause of the wide straps, easier on my shoulders.
Goldhara M on May 16, 2016
Trying to find a bra that I like for the backcountry...I'll let you know if this is the one.
Hannah D on May 14, 2016
I have been wearing Ibex bras for last 4 years and love them. I don't think I've tried this style and it might not work cause I usually need to let out the adjustability of my bras quite a bit. But hoping I like the fit. The main reason I'm t trying this style is cause of the wide straps, easier on my shoulders.
Goldhara M on May 16, 2016
Awesome reviews so I want to try!
Margaret L on May 16, 2016
Trying to find a bra that I like for the backcountry...I'll let you know if this is the one.
Hannah D on May 14, 2016
Comfortable. Natural material. Who wants plastic next to their skin especially tender skin. It is not padded to "hide" anything. Good cut that allows movement but supports. I own 3 of them.
andrea o on May 9, 2016
So comfortable, doesn't bind. Need black large!
linda a on May 8, 2016
Good wicking for long dry bike rides!
Guest S on May 3, 2016
they're what I wear on all days off work, comfortable and nice.
Vicki V on May 1, 2016
Because of the color. I need to wear it under a white wool t-shirt that is very see thru.
Louise R on Apr 22, 2016
Wool cannot be beat for comfort during a hot sweaty yoga class, and I was also interested in trying these out for hot and cold weather running.
Judy D on Apr 13, 2016
Already have 2 dark ones and wanted a neutral color
UPGirl on Apr 9, 2016
Hoping it will be as comfortable as the underwear that I have
thyroid patient on Mar 16, 2016
because it's the most comfortable bra ever
Rosalie L on Mar 13, 2016
I am looking for a bra that will wick moisture so I don't have to get so chilly as soon as I stop running or hiking in the Wyoming mountains.
Becky W on Mar 12, 2016
wanted a sports bra that doesn't absorb odors
Guest S on Mar 9, 2016
I will be walking 300 miles in Spain this July. Hoping this will keep me dry and odor free!
Joanne L on Mar 8, 2016
Looking desperately for a comfortable bra.
kathryn u on Feb 27, 2016
I was looking for an odor free sports bra.
Monica C on Feb 24, 2016
on hut trips i usually take 2 sports bras but if this is truly stinkless and stays dry, i may be able to take only one. can't way to try it
emily c on Feb 20, 2016
have one - need another
Mary Jo W on Feb 19, 2016
Victoria Y on Feb 8, 2016
Susan D on Feb 7, 2016
well-reviewed - loos like good all-purpose option
Michelle D on Feb 4, 2016
my wife wants another one, loves the one she has.
Mark H on Feb 3, 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
best sports bra ever
stacy h on Oct 8, 2015
Awesome reviews so I want to try!
Margaret L on May 16, 2016
Comfortable. Natural material. Who wants plastic next to their skin especially tender skin. It is not padded to "hide" anything. Good cut that allows movement but supports. I own 3 of them.
andrea o on May 9, 2016
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.
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
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.
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.
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.
I am a plus size woman who normally wears a 42DDDD sized bra. Will you ever make a bra large enough for plus sized woman? There are many of us who already enjoy the benefits of wool and would appreciate the chance to enjoy the same benefits in our underwear.
Jennifer H on May 1, 2016
BEST ANSWER: Hello Jennifer we will start making our bra's a little bit bigger coming in Spring / Summer 2017. Thanks
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
18 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
9 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
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
9 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
8 months ago
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
12 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
10 months ago
Very comfortable and nice quality
I hate bras. I can't wait until winter when I can pile on layers instead of wearing a bra. So I try bras like this to see if they help. The large fits me perfectly, material is nice and washes well. It doesn't "shape" you like most bras, but they leave me screaming by the end of the day. The straps on this go very close to the neck so it doesn't work with open neck tops.
November 14, 2015
7 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
9 months ago
Love it
This is my second purchase of the sports bra. I went with black to get more use out of it on an everyday basis, I can wear to work and then to a workout after - no need to change. The straps are a bit high, but seems fine.
I think it is one of the best sports bra out here for me, have cleaned out all the old ones. Just wish I could afford a few more.
March 15, 2016
3 months ago