Magic Fit® replaces the measuring tape.

Faster and more accurate than a human tailor, Magic Fit® uses technology to make custom easy.


Your height determines how long we make your Tee (obviously), but also sleeve length.


When combined with height and age your weight helps us predict body shape which can be qualified in the next step.


Your age qualifies weight because older bodies are different. Age is also statistically significant when calculating your waist, hip and bicep.


Your bra allows us to account for bust and is also statistically significant for predicting your hips.


Your Magic Fit® Tee.


When you’re ready to buy, tell us what makes your body unique and we’ll customise these measures even further...

Know what you want?

Tell us straight and we'll make it happen.

Short Crew

Or 4x payments of




100% Certified Organic Cotton 'Light' 110 GSM

Our lightweight organic cotton is grown and spun in India before being knitted in Melbourne at 110 gsm. Perfect for the Aussie summer it's ultra soft and naturally breathable with a luxurious drape as well as being Global Organic Textile Standard (GOTS) certified.

Please note we only offer dark colours in this fabric which are guaranteed opaque, because on lighter colours (inc. white) it can become semi-sheer.

Free shipping on all swatches

100% Certified Organic Cotton 'Everyday' 145 GSM

Our 'everyday' organic cotton is grown and spun in India before being knitted in Melbourne at 145 gsm for the ultimate year-round weight.

It's incredibly soft, naturally breathable and washes like a dream as well as being Global Organic Textile Standard (GOTS) certified.

Free shipping on all swatches

100% Certified Organic Cotton 'Heavy' 180 GSM

Our heavier organic cotton is grown and spun in India before being knitted in Melbourne at 180 gsm, perfect for winter layering.

With an amazingly soft handle and just as breathable as the 145 gsm, the extra weight provides more stability and durability as well as being Global Organic Textile Standard (GOTS) certified.

Free shipping on all swatches

55% Hemp / 45% Organic Cotton

Hemp is the planet-friendly miracle fibre produced from the stem of the cannabis plant. Biodegradable and naturally organic requiring zero pesticides or herbicides, hemp also uses 50 percent less water than cotton.

With a visible texture similar to pure linen our 210 gsm weight is blended with organic cotton for softness to achieve the perfect balance between opacity, breathability and UV resistance making it ideal for the long hot Aussie summers.

Free shipping on all swatches

100% Superfine Non-Mulesed Merino Wool

Our 17.5 micron 'superfine' pure merino wool is single-origin sourced from happy sheep 300km west of Sydney before being knitted in Melbourne. How do we know they're happy? Because we exclusively buy certified cruelty-free 'non-mulesed' wool.

The extra-long staple ewe's fleece makes a 150 gsm cloth that is softer, smoother and more resistant to pilling than regular merino and feels like true luxury against the skin.

Free shipping on all swatches

Glad you asked because this question has two interpretations. 

The first is asking why we need someone’s age for Magic Fit®, and the second is asking why we need your date of birth, when surely year is enough.


Why do we ask for age? 

Intuitively it might feel like age doesn’t play a part in predicting measurements, because after all, the length of your arms hasn’t changed since the day you stopped growing.

And you’re right. Age is not statistically significant when trying to predict arm length. However, age is statistically significant for predicting waist, hips and bicep based on our analysis of biometric data collected from over 8000 individuals, which we overlaid with data manually captured from thousands of in-store fittings to test the validity of the algorithm that would become Magic Fit®.

Age is statistically significant for predicting waist and bicep measurements, among others. 

What we achieved with Magic Fit® is novel, but not new as research into body composition dates back decades. We're standing on the shoulders of giants such as Pollock found bra and cup size to be statistically significant when calculating body density for women in the 1970s.


Our body shapes change with age


Then in 1989 Shimokata studied 1179 men and women and was able to identify a trend showing increase in upper and central body fat deposition with age. Followed by Deurenberg in 1991 who studied 1229 men and women and was able to predict body density and body fat percentage using height, weight and age as independent variables. Both Shimotaka and Deurenberg each created prediction formulas not dissimilar to Magic Fit®.


Custom fit to your body with magic mathematics.


So, age - along with height and weight (and bra for women) - allows us to build an accurate statistical model which is the core of Magic Fit®. But a statistical model is only ever predictive and cannot account for the individuality of every body, so it’s important to remember this is only the first of four layers in Magic Fit® and these measurements alone do not define you. 

We know that some people were on the swim team and others carry their weight in their tummy or maybe their thighs. We also know that some people have disabilities which affect body shape (sometimes significantly). 

You tell us what makes you special, and we make your Tee on-demand to fit you (and only you) - with every Tee backed by our perfect fit guarantee.

Nature and nurture need to be taken into account, so we added Natural Language Processing (NLP) to account for individuali-Tee. You tell us what makes you special, and we make a Tee on demand, to fit you and only you - with every Tee backed by our perfect fit guarantee. Yes, really.  


Why birthday then, and not just age?

At Citizen Wolf we’ve grown up really close to our customers. Our roots are in physical retail and to this day our factory is still a shop so we’ve always had a high touch experience. 

We’ve gotten to know many, many customers over the years and some of them have become our closest friends. We didn’t want to let go of that friendly, personalised feel just because we started selling online. It’s why we pride ourselves on delivering the best customer service; because that’s what we would do for our friends.

Friends also celebrate birthdays, so when you share yours with us we get the opportunity to surprise you on your special day 😊

As always, if you have any questions, opinions, praise or criticisms... just howl!



PS - Your data is only ever used to make the best fitting Tees in the universe and is held securely with the same online encryption used by your bank. If you’re still uncomfortable just use January 1 with the correct year.



Prediction of body density in young and middle-aged women. Journal of Applied Physiology 1975 38:4, Pages 745-749 M. L. Pollock, E. E. Laughridge, B. Coleman, A. C. Linnerud, and A. Jackson

Studies in the Distribution of Body Fat: I. Effects of Age, Sex, and Obesity. Journal of Gerontology, Volume 44, Issue 2, March 1989, Pages M66–M73 Hiroshi Shimokata, Jordan D. Tobin, Denis C. Muller, Dariush Elahi, Patricia J. Coon, Reubin Andres.

Body mass index as a measure of body fatness: Age- and sex-specific prediction formulas. British Journal of Nutrition, 65(2), Pages 105-114 doi:10.1079/BJN19910073 Deurenberg, P., Weststrate, J., & Seidell, J. (1991).