How to measure
Measure directly against your body, keeping the tape snug but not tight.
- Chest / bust — measure around the fullest part of your chest, keeping the tape level across your back.
- Waist — measure around the narrowest part of your waist.
- Hips — measure around the fullest part of your hips and seat.
- Inseam — measure from the top of your inner leg to your ankle.
Men's tops — tees, vests, hoodies and crews
Performance tops have an athletic, close fit. Lifestyle tops have a regular fit with room to move. If you're between sizes or prefer a looser feel, size up.
| Size | Chest (cm) | Waist (cm) | UK equivalent |
|---|---|---|---|
| S | 91–96 | 76–81 | 36–38 |
| M | 96–101 | 81–86 | 38–40 |
| L | 101–106 | 86–91 | 40–42 |
| XL | 106–112 | 91–96 | 42–44 |
| XXL | 112–118 | 96–101 | 44–46 |
Women's tops — tees, vests, hoodies and bras
Women's performance styles are designed to be fitted. The Active Bra gives low-to-medium impact support with a removable bust cup. If you're between sizes or prefer more coverage, size up.
| Size | Bust (cm) | Waist (cm) | UK equivalent |
|---|---|---|---|
| S | 81–86 | 63–68 | 8–10 |
| M | 86–91 | 68–73 | 10–12 |
| L | 91–96 | 73–78 | 12–14 |
| XL | 96–101 | 78–84 | 14–16 |
| XXL | 101–107 | 84–90 | 16–18 |
Women's leggings
7/8 length with a supportive high waist. True to size — if you're between sizes, size up for a more comfortable fit.
| Size | Waist (cm) | Hips (cm) | UK equivalent |
|---|---|---|---|
| S | 63–68 | 89–94 | 8–10 |
| M | 68–73 | 94–99 | 10–12 |
| L | 73–78 | 99–104 | 12–14 |
| XL | 78–84 | 104–110 | 14–16 |
| XXL | 84–90 | 110–116 | 16–18 |
Accessories and equipment
Socks, caps, beanies, wristbands and patches are one-size or sized by head/foot circumference — check the product page for details. Equipment such as the wall ball is labelled by weight rather than size.
Still unsure?
Every product page includes a size chart where available. If you need help choosing a size, contact the 8ROX team through the Contact page before ordering — and remember, unworn items can be returned within 30 days.