In the world of athletics and popular races, sports apparel is no longer just a matter of functionality. More and more, clubs and organizations are looking for their own image, an identity that represents them both in and out of competition.
At 42K we know this well, and that’s why, in addition to offering technical collections designed for high performance, we also focus on creating completely personalized textile solutions. We’re talking about Custom Line 42K, our line of custom kits designed for those clubs, collectives, and running groups that don’t settle for the standard.

Beyond the garment: a brand experience
For years we have been working to equip events, clubs, and runners of all levels with technical t-shirts, shorts, and specific running tights, windbreakers, or accessories that combine design, innovation, and quality.
But the growth of athletics and especially “running” has also been accompanied by a development of the brand image of clubs, event organizers, and sports and runner collectives. And that’s where the custom kits we bring to life with Custom Line 42K come into play.

Because a t-shirt, a top, or competition tights shouldn’t just be light, breathable, and comfortable. They must also project an image. They must speak of the club that wears them. Of the effort behind them. Of the human team that runs together under the same colors. That need led us to create our Custom Line 42K line, where each garment is a statement of identity.
CUSTOM Line 42K: technical customization at the highest level
In the Custom Line 42K section, we start every project the same way: listening. Our design and production team works hand-in-hand with clubs and entities to develop garments that reflect their values, goals, and needs. From choosing the most suitable fabrics to the graphic proposal or the choice of garments, the entire process is focused on building a unique kit.
Among the fundamental pillars of our Custom Line 42K section are:
- Latest generation fabrics
All Custom Line 42K garments are made with technical fabrics designed for high performance: lightweight, breathable, quick-drying, and wear-resistant. Additionally, many of them are made with recycled polyester, as part of 42K’s commitment to sustainability.
- Tailor-made designs
We don’t start from closed templates. Every client has the possibility to design their kit from scratch. Our design team offers exclusive graphic proposals adapted to the club’s visual DNA, incorporating logos, corporate colors, slogans, and any element that helps reinforce the team’s identity.
- Advanced customization techniques
We use digital customization techniques such as full sublimation, which not only allow for enormous creative freedom but also guarantee the durability of colors and graphics even after intensive washing or prolonged use in the most demanding conditions.
- Color tests
Before final production, we work on samples and prototypes to ensure that the color adjustment meets the client’s expectations, who has already been able to test the comfort of the patterns and fabrics because we provide samples and even sizing kits if necessary. We know that every detail counts in competition, and that’s why the adjustment of both patterns and colors is key.
Success stories: Metaesport
Since the launch of the Custom Line 42K section, many clubs and entities have trusted 42K to equip themselves with the highest quality. Teams like Metaesport, one of the leaders in athletics in the Valencian Community with athletes standing out for years on the national scene, have chosen to renew their competition image with our technical garments from the Custom Line 42K section.

Through close collaboration between the club’s technical managers and the 42K design and production team, we developed a complete line of technical kit with a renewed design for the image of the athletics club from Riba-roja de Túria (Valencia).
This “restyling” of the competition kit has involved an update of the textile design, as well as the review and modernization of the club’s logo and visual identity with the aim of projecting a more current, solid, and recognizable image, but without altering its essence and the colors that identify it.
The garments that make up the new kit for Club Deportivo Metaesport are made with latest generation fabrics, lightweight, breathable, and designed to meet the demands of competitive athletics.

“Working with Metaesport has been a perfect example of what we look for with our CUSTOM Line 42K line: joining the club’s technical knowledge with our textile experience to create unique garments, with their own identity and designed to perform at their best”, highlights Guillermo Peñalver, manager of 42K.
And it’s not just about athletics. Event organizers, companies, or solidarity initiatives have also chosen to customize their garments with 42K, knowing that behind them is a committed team and a brand that works with the same passion as those who run in our t-shirts.

Customization and sustainability: a commitment to the future
42K’s commitment to sustainability is not left out of our 100% custom line. More and more, we incorporate recycled fabrics into our Custom Line 42K productions, taking a firm step towards a more responsible model. The goal is clear: to reach 2030 by offering a wide catalog of technical garments made with recycled materials. And that includes, of course, custom kits.
Furthermore, we focus on local manufacturing for our 100% custom kits, working with national suppliers whenever possible to reduce our carbon footprint and guarantee quality control at every stage of the process.
How to start your custom kit with Custom Line 42K?
If you are part of a club, a company, or an entity looking to renew your sports kit, just get in touch with our team through our section at the following link on our website: Custom Line 42K.
From there, we open a joint work process in which we will define your technical and visual needs, and we will present you with exclusive proposals. All so that you can compete with a kit that represents you and helps you give your best.
The Custom Line 42K line is much more than custom clothing. It is a tool for identity, a high-performance solution, and a commitment to sustainability. It is a way to take your team to the next level, with garments designed to compete and stand out.
Are you ready to create your own kit with us?


Text for 42K by:
Paco Amorós
Responsable de Comunicación de 42K
Licenciado en Periodismo por la Universidad CEU Cardenal Herrera y máster en marketing digital. Responsable de Comunicación de 42K.
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