STELLAR: winter running tops inspired by the stars

At 42K, we believe and stand by the idea that running is much more than a sport or a leisure activity: it’s an experience that brings together body, mind, and environment. Running connects us with nature, with the city or town we live in or visit, with the outdoors, and with that unique feeling of freedom we enjoy as the miles flow beneath our feet. That’s why every new collection we launch aims to accompany runners on that journey, bringing technical innovation, comfort, and a touch of inspiration.

With STELLAR, we’re taking another step forward to offer a technical garment that adds to the joy of running. It’s a collection of technical long-sleeve tops, made entirely from 100% recycled fabric, that pays tribute to the universe and to four stars whose light guides this proposal. A collection designed for those looking for versatile, durable pieces with exclusive design for training or racing in transitional seasons and on cool days.

STELLAR: a collection made with 100% recycled fabric

The starting point for the STELLAR collection is its Neo-Tec fabric, made from 100% recycled polyester. Sustainability is one of 42K’s strategic pillars, and more and more collections incorporate fabrics that focus on recycling and the lowest possible environmental impact.

But choosing the fabric isn’t only about sustainability—it’s also technical. Neo-Tec stands out for its soft feel against the skin and its special 140 g/m² weight, making it an ideal fabric for long-sleeve tops or winter running tops. This higher weight adds extra durability and, at the same time, more warmth—making the difference on training days when temperatures are lower at dawn or as evening falls.

A collection inspired by the stars

The STELLAR collection is inspired by four great stars in our sky: Naos, Vega, Antares and Alpha Orionis. The universe has served as an aesthetic and conceptual guide for the development of these designs.

As a tribute, each top features on one sleeve the star’s name, its astronomical coordinates, and a depiction of the constellation it belongs to. A detail that gives each garment its own identity and strengthens the bond between the runner and that infinite universe that opens above their head on every night training session or outdoor run.

The result is four exclusive models, with bold, original colour combinations that convey strength, energy, and movement.

The four STELLAR models: Naos, Vega, Antares, and Alpha Orionis

Each star inspires a unique design within the collection.

• Naos: petrol blue and vivid orange.
  Naos is one of the hottest stars known, and its design pays tribute to that extreme temperature. Petrol blue dominates the overall look, contrasted with a vivid orange that conveys energy and vitality. Perfect for those looking for an eye-catching top that still feels balanced.
• Vega: black and neon blue.
  Elegance and modernity in one design. Deep black sets the base of the top, while the neon-blue details evoke Vega’s brightness, one of the most brilliant stars in the night sky. Ideal for runners looking for a understated style with personality.
• Antares: burgundy and fiery oranges.
  Inspired by the reddish hue of this supergiant, Antares combines an intense burgundy with fiery orange accents, creating a vibrant, warm effect. A piece full of character that reflects the passion of those who put all their energy into every training session.
• Alpha Orionis: purple with violets, pinks, and oranges.
  Also known as Betelgeuse, Alpha Orionis is the most famous red supergiant in the Orion constellation. Its top combines dark purple with a palette of violets, pinks, and oranges that adds rich colour and originality. A highly visual, artistic piece for those who want to stand out.

Unisex fit and versatility

The STELLAR collection uses the unisex pattern that debuted with the VORTEX Winter. This pattern includes side vents, designed to improve range of motion and aid ventilation. Its ergonomic design adapts comfortably to both men and women, offering a standard fit that ensures the perfect balance between comfort and performance.

These are technical tops designed mainly for running and trail running, but their versatility also makes them an excellent option for trekking, Nordic walking, or a wide range of outdoor activities where you need to maintain a balanced body temperature and have a lightweight, breathable, durable garment.

Technologies that make the difference

In addition to Neo-Tec fabric, STELLAR tops incorporate three exclusive technologies that ensure performance even under intensive use:

• DC4-Long Life Run: ensures colours keep their original intensity, even after multiple washes and long training sessions in the sun.
• DRY-TEC+: promotes quick drying, keeping the skin as dry as possible even during high-intensity efforts.
• SOFT-LIGHT: adds extra softness to the fabric, preventing chafing and discomfort during movement.

Thanks to these technologies, the STELLAR collection becomes a reliable ally for those who train several times a week and want a garment that combines durability, comfort, and aesthetics.

When should you wear STELLAR?

STELLAR tops are designed for transitional seasons and for those times when the weather is cool early in the morning or as the sun goes down. They’re the ideal garment for those looking for an extra touch of warmth without giving up the lightness and breathability running demands.

Whether it’s a mountain trail session, a long city run, or a weekend trekking route, STELLAR tops adapt to every scenario, delivering optimal performance.

STELLAR: run with the power of the universe

With STELLAR, 42K reaffirms its commitment to sustainability, textile innovation, and exclusive design. A collection that not only outfits runners, but connects them with the immensity of the universe and the energy of the stars.

Each model in the STELLAR collection is an invitation to run with confidence, style, and personality. Because, in the end, every stride is a way to explore the world… and to get a little closer to the stars.

🔹 STELLAR is available in four exclusive models: Naos, Vega, Antares, and Alpha Orionis.
🔹 A 100% recycled, technical, sustainable collection designed for those who believe running is a way to travel beyond limits.

Discover the new STELLAR collection here: STELLAR Collection.

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