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, Brushtail, Trilogy, McDonald, Royal Merino & Woolline.
Koru, Brushtail by Koru & Trilogy
Koru, Brushtail by 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 | 82-85cm32-33" | 86-89cm34-35" | 90-93cm35-37" | 94-97cm37-38" | 98-101cm39-40" | 102-105cm40-41" |
| Waist | 65-69cm26-27" | 70-73cm28-29" | 74-77cm29-30" | 78-81cm31-32" | 82-85cm32-33" | 86-90cm34-35" |
| Hips | 92-95cm36-37" | 96-98cm38-39" | 99-101cm39-40" | 102-104cm40-41" | 105-108cm41-43" | 109-112cm43-44" |
Men's Size Guide
| Size | S | M | L | XL | XXL | 3XL |
|---|---|---|---|---|---|---|
| Chest | 92cm36" | 97cm38" | 102cm40" | 107cm42" | 112cm44" | 117cm46" |
| Waist | 77cm30" | 82cm32" | 87cm34" | 93cm37" | 99cm39" | 105cm41" |
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
Royal Merino provide a women's size chart 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 | 87cm34" | 92cm36" | 98cm39" | 104cm41" | 110cm43" | 117cm46" |
| Waist | 71cm28" | 76cm30" | 82cm32" | 88cm35" | 94cm37" | 101cm40" |
| Hip | 97cm38" | 102cm40" | 108cm43" | 114cm45" | 120cm47" | 127cm50" |
Woolline
Woolline's poncho, cape and vest come in M and L. Each product page lists the exact garment measurements for both sizes, so you can check them against a piece that already fits you well.
Need help finding your size? Get in touch – we're happy to help you find the perfect fit.
