On Running Lightweight Cap 2019 Review

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I love to see how new technologies and innovative thinking can make something as simple as a hat, better.

On Running Lightweight Cap Review
General cap design & front reflective logo


On have done really well with this cap. My first observation is how well ventilated the cap is, meaning your head won’t overheat when running.

On Running Lightweight Cap Review
Lots of ventilation holes

It’s very lightweight and has a fabric band where the cap gets tightened, which is useful for keeping sweat off your face when wearing backwards.

RELATED: Best Running Hats 2019: Top 5 Technical Caps for Trail & Ultrarunners

On Running Lightweight Cap Review
plastic clasp with a fabric strap, tucking into the side of the hat.

The extra fabric from the tightening strap gets tidily hidden within a clever compartment, leaving no flapping material. It also has a high vis reflective logo on the front for running in low light.

On have also added thin fabric to cover an internal seems. I’m not sure they are needed though as the hat fits so snuggly that any chaffing movements are very unlikely.

On Running Lightweight Cap Review
Interior seems covered with thin fabric to stop potential chaffing
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On Running Lightweight Cap
Overall Score


5 stars for my favourite new running cap! This cap is available for purchase at the On Running store here: On Running Lightweight Cap

$39.99 at on-running.com

On Running Lightweight Cap Review
Lightweight Cap – Engineered in Switzerland
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