Core Performance T-Shirt
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Description
Train smarter with this men's On Running Core Performance T-Shirt, designed for performance-focused athletes who value clean, functional style. The standard fit offers unrestricted movement, while the reflective detailing keeps you visible during low-light runs. Finished in a crisp white colourway, this short-sleeve tee pairs seamlessly with any running shorts or joggers. It's a versatile essential for serious runners and fitness enthusiasts.
Shipping & delivery
FREE standard shipping on orders $150 AUD and over — $25 flat rate under $150. Orders are processed within 2–3 business days and delivered Australia-wide in 10–12 business days, fully tracked via DHL or Aramex. The price at checkout is final: all duties and taxes are covered (Delivered Duty Paid). We don't ship to PO Boxes or Parcel Lockers.
Returns & refunds
30-day returns. Items must be unworn, unwashed, with tags and in original packaging (including the shoe box). Faulty or incorrect items: contact us and we'll normally provide a prepaid return label. Change of mind or wrong size: return shipping is at your cost — no restocking fee. Refunds go to your original payment method within 5–10 business days of approval, in line with Australian Consumer Law.
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From the blog
On Running Men's Clothing Size Guide
On men's clothing uses standard XS–XXL sizing, the same in Australia as in the US and UK. On cuts its apparel true to size, so order the size you normally wear. The figures below are your body measurements in centimetres, not garment measurements.
| Size | Chest (cm) | Waist (cm) | Hip (cm) |
|---|---|---|---|
| XS | up to 90 | up to 75 | up to 89 |
| S | 91–96 | 76–82 | 90–95 |
| M | 97–102 | 83–89 | 96–101 |
| L | 103–108 | 90–96 | 102–107 |
| XL | 109–117 | 97–105 | 108–113 |
| XXL | 118–126 | 106–114 | 114–119 |
On labels each garment with its own fit — Close, Regular or Relaxed. A Close fit is deliberately body-hugging for racing and is not a sign to size up.