O3Performance Shorts
O3 — S-S 2026

Performance Shorts

$77

The O3 Performance Shorts are engineered for movement without compromising on style. Crafted from a lightweight performance blend incorporating COOLMAX® fiber technology, they help wick moisture away from the body to support a cool, dry and comfortable feel through every training session, while the side-split hem and elasticated waistband provide unrestricted range of motion.

Size
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14-day returns on eligible items
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Description+

The O3 Performance Shorts are engineered for movement without compromising on style.

Crafted from a lightweight performance blend incorporating COOLMAX® fiber technology, they help wick moisture away from the body to support a cool, dry and comfortable feel through every training session, while the side-split hem and elasticated waistband provide unrestricted range of motion.

Finished with a signature raised tonal O3 logo, they're the foundation of the collection — timeless, versatile and understated.

Built Through Discipline. Run Your Own Race.

Features

  • Lightweight performance blend
  • COOLMAX® fiber technology for moisture-wicking comfort
  • 39% polyester / 27.5% cotton / 27.5% modal / 6% elastane
  • Athletic fit
  • Elasticated waistband with adjustable drawcord
  • Side-split hem
  • Raised tonal O3 logo
  • Designed for training & everyday wear
Size & Fit+

Athletic training fit in a four-way stretch performance knit. Fits true to size. If between sizes, size up for a roomier fit.

Model is 181cm and is wearing a size L.

Delivery & Returns+

Shipping options and delivery charges are shown at checkout.

Shipping options and delivery charges are shown at checkout. Eligible items can be returned within 14 days in line with our Return & Refund Policy.

Size Guide

Performance Shorts

Garment measurements taken with the product laid flat.

MeasurementSMLXL
Waist width (1/2)39414345
Hip width (1/2)55575961
Inseam length14151617
Outseam length42444648
Leg opening31323334

Choosing your size

For the most accurate comparison, measure a similar garment you already own while it is laid flat. If you sit between two measurements, choose the larger size for a roomier fit.

Measurement note

“1/2” measurements are taken straight across the garment, not around the body. Small variations may occur due to normal manufacturing tolerance.

Complete the look.

O3 Performance T-Shirt, ObsidianO3 Performance T-Shirt, AubergineO3 Performance T-Shirt, Cream Ivory
$84
Aubergine

T-Shirt Aubergine · S

View the Performance T-Shirt