80% of women are wearing the wrong size

Getting the right
fit is crucial.

The Breast Support System (BSS) is engineered for high-impact support without crushing, restricting, or compromising on comfort. Great design is only half of the equation; the other half is the right fit.

Finding the right size → Fitting support → How the BSS should feel → Fitting troubleshooting → Replacing & refitting guidance → Product care → Materials & allergies →

In this guide

  • Finding the right size

    We'll guide you to find your right size.

  • Fitting support

    Integrated support form specifically for sizing queries.

  • Fitting troubleshooting

    What to do when something doesn't feel right.

  • Replacing & refitting

    Guidance on when to replace and refit.
FINDING YOUR SIZE

How to Measure

Always look straight ahead while measuring. Looking down at the tape makes your shoulders and chest cave in, giving smaller, incorrect measurements.

STEP 1

Measure Your Underband

Wear your regular bra. Wrap a measuring tape around your ribcage under your bust, keeping it parallel to the floor. Ensure the band is snug but not indenting the skin. Measure while taking a full breath. Enter the number below.

STEP 2

Measure Your Bust

Measure around the fullest part of your bust (nipple level) while keeping it parallel to the floor. Ensure the band is snug but not indenting the skin. Enter the number below and then click "Calculate your size".

Traditional Bra Size Chart

Cup BRA SIZE
55 60 65 70 75 80 85 90 95 100
A XS S M L L XL 2XL 3XL 4XL 4XL
B XS S M L L XL 2XL 3XL 4XL 4XL
C XS S M L L XL 2XL 3XL 4XL 4XL
D XS S M L L XL 2XL 3XL 4XL 4XL
DD XS S M-L L-XL L-XL XL-2XL 2XL-3XL 3XL-4XL 4XL 4XL
E - - M-L L-XL L-XL XL-2XL 2XL-3XL 3XL-4XL 4XL 4XL
F - - M-L L-XL L-XL XL-3XL 2XL-4XL 3XL-4XL 4XL 4XL

Find your band size in the column that matches your measurement, then match it to your cup letter to find your Tigers Eye BSS size.

Get Sizing Help

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The experience

How does the BSS feel on?

Most women describe the BSS as a new sensation because it doesn't behave like a "normal" bra. Here's what to expect the first time you put it on.
Do you opt for comfy light-support bras?

It might feel like "a lot" at first.

The underband is firm but comfortable. It will support your breasts without restricting your breathing.

That firmness is doing real work: 80% of a bra's support should come from the underband, which is what prevents early sag and protects breast tissue from long-term damage. Give it a few wears!

Do you usually wear tight, restrictive bras?

It might feel like it's not enough.

The BSS is designed to be as comfortable as it is supportive. You do not need to be compressed or squished to experience proper support in a BSS.

Before sizing down, take your BSS for a test run or bust out a few jumping jacks. You’ll find the support you want is already there.

Load video: Load video:

The bounce test

Before deciding to size down, jump in place a few times. If movement is controlled and the band stays put, you have the support you need. If you would like a second opinion, get in touch.
TROUBLESHOOTING

Common Issues & Solutions

Find quick solutions to the most common fitting questions.

Upper back chafing

Ensure the adjustment ladder sits behind the hook so the hook itself does not touch the skin. This prevents the hooks from digging in.

Straps coming undone

Older versions of the BSS allow the hook to be pinched to lock in your setting choice, as shown in the picture above. The hook is made of metal, so apply force. Newer versions use bespoke hooks that are double-locked from the first adjustment.

Lower back chafing

Similar to the straps, ensure the adjustment flap sits behind the hooks, so no metal touches your skin. This prevents any hot spots or chafing.
Something else?

Jump to a section

Measuring Sizing help The Experience Troubleshooting Refit & Replace Materials & Allergies
Replace

When to Replace a BSS

Even a perfectly fitted BSS has a lifespan. Just like running shoes, they get worn out by use and washing. To remain 100% supported in your training and duties, follow our guidelines for replacement.

12 months

12 months
A BSS should never see its birthday. Replace at 12 months even without visible wear & tear marks. There may be microtears that compromise on the support.

Sooner

Sooner
If you have lost or gained weight and your current BSS feels too loose, too tight or it's causing chafing and movement that wasn't there before, it's time for a new one.
refit

When to Refit a BSS

Weight shifts, menstrual cycles, pregnancy, breastfeeding - the BSS adjusts in the shoulder straps and underband up to 2 inches / 5 cm, and the cups accommodate changes up to 2 cup sizes. Beyond that, it may be time to move to another BSS size.
Cyclical changes

Cyclical changes

Use the strap and band adjustments to accommodate menstrual cycle-related changes. No need to change BSS sizes unless there is a permanent breast size change.
Pregnancy & weight changes

Pregnancy & weight changes

The BSS flexes through up to two cup sizes. Beyond that, size up or down for proper support and performance.
Breastfeeding

Breastfeeding

To breastfeed in the BSS, simply unclasp the underband and lift the BSS from underneath the breast. Refit when breastfeeding causes significant breast size change.

Prosthesis? No problem!

For wearers with post-mastectomy prostheses, the BSS is engineered with internal silicone grips inside the cups. The grips keep both natural breast tissue and prosthesis in place, minimising movement and eliminating the risk of the prosthesis slipping or falling out, even at high impact.
PRODUCT CARE

Washing Your BSS

Follow these instructions to protect the fit, support, and antibacterial finish of your BSS. Following both steps every wash is what keeps a BSS supportive for its full lifespan.

30°C or colder

Always machine wash cold. Higher heat warps the fit, weakens the fabric and degrades the antibacterial feature.

Air dry only

Skip the dryer entirely. Tumble heat damages the antibacterial silver-ion finish.

materials & allergies

What's in the BSS

Avoid using a BSS if you have a known allergy to any of the following:

Silicone

The internal grips that hold the breast or prosthesis in the cup are silicone and not removable.

Silver Ions

The BSS is treated with silver ion for an antibacterial finish, useful for high-wear, high-activity use.

Other Metals

If you have a metal allergy, the plastic coating sits between the hook and skin but on the off chance of the plastic being worn out, please avoid use.

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