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M-Series Running Caps

The M-Series running cap is where Fractel's whole range started, our core silhouette from 58cm up.

Lightweight, packable and backed by our guarantee

Every M-Series cap is lightweight, breathable, packable and machine washable, with the widest colourway range in the collection. It's backed by our EYE (Exceed Your Expectations) Guarantee, too.

Where the range started

Since 2018, the M Series running cap has been Fractel's first and most enduring shape, the one everything else in the range grew from. It's still the widest colourway range we offer and the cap most people reach for first. It also comes in a Small/Medium fit at 56cm, so the standard 58cm-up sizing isn't the only way into this cap.

What the EYE guarantee actually covers

EYE stands for Exceed Your Expectations. If an M Series running cap doesn't hold up the way it should, that guarantee is what stands behind it, not just a returns policy buried in the fine print.

Part of our wider running caps range, alongside the fitted CP-Series for race day and the ponytail-friendly C-Series.

Fractel M-Series running cap banner
Fractel M-Series running cap banner

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FAQs

What makes the M-Series running cap different from Fractel's other cap series?

The M-Series is our core, do-everything running cap line, the everyday option rather than a specialist race, small-head or ponytail design. It's the place to start if you're not sure which series suits you yet.

What fabrics does the M-Series come in?

Depending on the colourway, M-Series caps run on REPREVE recycled fibre, Coolcore Breeze mesh, Polartec Power Dry, PACE or FLOWmesh, so there's a build suited to everyday training, humid heat or winter wind. Check each product page for the specific fabric.

What size is the M-Series running cap?

The M-Series runs one standard size at 58cm with an adjustable rear strap, which covers most adult head sizes. If you're outside that range, our Caps for Larger Heads or Caps for Smaller Heads collections cover exactly that.

Is the M-Series running cap suitable for racing, or just training?

It's an everyday cap first, so it's genuinely fine for both. If you're chasing every gram on race day, our CP-Series or R-Series are the more dedicated race-day options.