Possum merino knitwear from New Zealand is not sized like fast fashion. Each brand follows its own sizing system, and getting the right fit first time matters — we don't offer free returns because shipping garments back and forth creates unnecessary carbon emissions. Use these size guides to find your best fit across our brands.
Getting It Right First Time
The size charts on this page show body measurements — the dimensions you measure on yourself, not the garment. Many of our product pages also include garment measurements, so you can compare them to a favourite item in your wardrobe for an even more accurate fit.
Not sure which size to choose? Contact us — we're happy to help you find the perfect fit.
How to Measure
Use a flexible tape measure and take measurements over light clothing for the most accurate results.
Chest/Bust: Measure around the fullest part of your chest, keeping the tape level under your arms and across your shoulder blades.
Waist: Measure around your natural waistline, keeping the tape comfortably loose. Your natural waist is the narrowest part of your torso, typically just above your belly button.
Hips: Measure around the fullest part of your hips, keeping the tape level.
Tip: If you're between sizes, consider sizing up for a relaxed fit or down for a closer fit. Check individual product pages for specific garment measurements where available.
Size Charts by Brand
Click on a brand below to view their size chart.
For a detailed comparison of how our brands size differently, see our guide: How Our Brands Size: Koru, Trilogy, McDonald & Royal Merino.
Koru & Trilogy
Koru and Trilogy use the same sizing.
Women's Size Guide
| Size | XS/8 | S/10 | M/12 | L/14 | XL/16 | XXL/18 |
|---|---|---|---|---|---|---|
| Bust | 82-85cm 32-33" |
86-89cm 34-35" |
90-93cm 35-37" |
94-97cm 37-38" |
98-101cm 39-40" |
102-105cm 40-41" |
| Waist | 65-69cm 26-27" |
70-73cm 28-29" |
74-77cm 29-30" |
78-81cm 31-32" |
82-85cm 32-33" |
86-90cm 34-35" |
| Hips | 92-95cm 36-37" |
96-98cm 38-39" |
99-101cm 39-40" |
102-104cm 40-41" |
105-108cm 41-43" |
109-112cm 43-44" |
Men's Size Guide
| Size | S | M | L | XL | XXL | 3XL |
|---|---|---|---|---|---|---|
| Chest | 92cm 36" |
97cm 38" |
102cm 40" |
107cm 42" |
112cm 44" |
117cm 46" |
| Waist | 77cm 30" |
82cm 32" |
87cm 34" |
93cm 37" |
99cm 39" |
105cm 41" |
McDonald
McDonald provides international size conversions rather than body measurements. Use these charts to find your equivalent size.
Women's Size Guide
| Region | XS | S | M | L | XL | 2XL |
|---|---|---|---|---|---|---|
| AU/NZ/UK | 8 | 10 | 12 | 14 | 16 | 18 |
| USA | 4 | 6 | 8 | 10 | 12 | 14 |
| Italy | 40 | 42 | 44 | 46 | 48 | 50 |
| FR/EU | 36 | 38 | 40 | 42 | 44 | 46 |
| Japan | 7 | 9 | 11 | 13 | 15 | 17 |
Men's Size Guide
| Region | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| AU/NZ | 8 | 10 | 12 | 14 | 16 | 18 | 20 |
| Italy | 44 | 46 | 48 | 50 | 52 | 54 | 56 |
| USA | 34 | 36 | 38 | 40 | 42 | 44 | 46 |
| FR/EU | 86 | 91 | 96 | 101 | 106 | 111 | 116 |
| UK | 36 | 38 | 40 | 42 | 44 | 46 | 48 |
Royal Merino
Women's sizing only.
Women's Size Conversions
| Region | XS | S | M | L | XL | 2XL |
|---|---|---|---|---|---|---|
| AU/NZ/UK | 8 | 10 | 12 | 14 | 16 | 18 |
| USA | 4 | 6 | 8 | 10 | 12 | 14 |
Women's Body Measurements
| Measurement | XS | S | M | L | XL | 2XL |
|---|---|---|---|---|---|---|
| Bust | 87cm 34" |
92cm 36" |
98cm 39" |
104cm 41" |
110cm 43" |
117cm 46" |
| Waist | 71cm 28" |
76cm 30" |
82cm 32" |
88cm 35" |
94cm 37" |
101cm 40" |
| Hip | 97cm 38" |
102cm 40" |
108cm 43" |
114cm 45" |
120cm 47" |
127cm 50" |
Need help finding your size? Get in touch – we're happy to help you find the perfect fit.
