Name: COS SLR U-PRNBLU/FUSH 3.5
Brand: Mavic
SKU: S00052270
Price: 2583 USD
Availability: InStock
Rating: 5 (4 reviews)

The Cosmic SLR is a road cycling shoe designed for performance rides, races, and intensive training. Its upper made of patented Matryx® fabric provides precise support while remaining breathable. The BOA® Fit system with two L6 dials independently adjusts the forefoot and instep for a precise fit. Underfoot, the carbon composite sole maximizes power transfer to the drivetrain. PU-coated Matryx® threads and front-foot ventilation in the sole promote airflow when temperatures rise. Weighing 270 g per shoe in UK size 8.5, you’ll keep your setup lightweight.

Main features

Dual L6 BOA® fit system across two zones for consistent support

Two BOA® L6 dials allow for micro-adjustable tightening across two zones. You can fine-tune the fit of the forefoot and instep separately, keeping the foot stable during sprints and when riding out of the saddle, without having to over-tighten the entire shoe.

Matryx® woven upper and PU-coated threads for effective ventilation

The woven Matryx® upper combines high-tenacity fibers and a patented weave to support the foot while allowing air to circulate. The PU-coated threads and front vents integrated into the sole increase breathability, which is useful during intense activity and in high temperatures.

80/100 index carbon composite sole: direct power transfer

The carbon composite sole features an 80/100 stiffness rating to efficiently transfer your power to the pedal.
The 3-bolt road cleat system (Look, SPD-SL type) ensures a secure fit.
Reference weight: 270 g per shoe in UK size 8.5, with rubber heel pads for grip when the foot is on the ground.

Specifications

Weight (8,5UK) per shoe : 270 g

Cyclists' opinions

Overall ratingAverage

5.0

12345

4 reviews

5 stars 44 stars 03 stars 02 stars 01 star 0

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GillesExpert

12345

7/8/26

“De la Balle en Français, extrêmement rigide quand on est en bonne condition y compris le pied habitué et préparé pour du pure chrono. Un peu fatigante sur de très longues distances au niveau de la voûte plantaire. Mais super rendement et positionnement de la jambe en mode chrono. Un maintien optimal. Les cosmic ultimate 3 etant plus légère et souple pour de ́longues distances et à forts dénivelé avec moin de rendement sur le plat et en chrono aero que les SLR. Hâte de tester et comparer les COSMIC Ultimate 4 un jour, si possible ou en décision d achat avec de magnifiques COMETE 50 ou COSMIC ULTIMATE montée sur le vélo.”

Answer from the team

“Bonjour Gilles, Nous vous remercions d'avoir pris le temps de nous détailler votre expérience et votre ressenti sur les chaussures. A très vite pour les COMETE 50. L'Equipe Mavic”

ThanosExpert

12345

1/15/26

“The Mavic Cosmic SLR Road Shoes deliver top-tier performance with a clean, race-focused feel. The carbon sole is incredibly responsive, and the closure system gives a precise, secure fit without pressure points. On the bike they transfer power effortlessly, and the overall comfort feels natural from the first ride. These aren’t just high-end shoes — they’re a serious performance upgrade for riders who want efficiency, breathability, and quality craftsmanship. Absolutely worthy of their flagship status.”

Jean-marcAmateur (1–2 rides per week)

12345

1/14/26

“Super ”

MarcelAmateur (1–2 rides per week)

12345

8/14/25

“Très bonnes chaussures. Les couleurs en photo ne correspondent pas à la réalité : moins franches, plus pâles.”

A snug fit, a responsive sole, and a clear head for riding.

COSMIC SLR Shoes