
Trail Cap
Pickup available at Negative Split HQ
Usually ready in 2-4 days

Trail Cap
Vortex
Negative Split HQ
13 Fade Street
Dublin 2
Dublin
D02 RR22
Ireland
Pro Sonic Singlet
Built for the days that matter most.
Introducing the Pro Sonic Singlet — our pinnacle performance piece, designed for runners who demand everything from their race kit without compromise. Laser cut, seamless construction with the most lightweight, technical, and premium fabric on the market, this singlet was created to disappear while you perform at your best. Developed after multiple iterations over the last year. We proudly bring our Race Day singlet to market.
Every detail has been refined with intention. From the barely-there feel of the fabric to the clean, understated branding, to the precision laser cut measurements our athletes and team worked tirelessly to perfect, the Sonic Blue Race Day singlet is engineered for movement at pace. Confident without being loud, sharp without trying too hard — this is race-wear designed with a modern runner in mind.
The artistic finish gives the singlet its identity. Fluid, energetic, and subtly expressive, the design captures the movement and emotion of race day itself. Distinctive enough to stand out, refined enough to remain timeless.
Race-Day Performance: Constructed using an ultra-lightweight Italian made technical fabric designed to maximise breathability, airflow, and comfort when the pace increases. Soft against the skin with a barely noticeable feel. Allowing all your attention to be on the road or track.
Engineered For Speed: Laser cut with a streamlined athletic fit that moves naturally with the body while remaining super-light and unrestricted from first stride to finish line. Seamless construction reduces chafing and promotes utmost comfort and barely there feel.
Minimal Branding: Finished with our subtle blurred NS logo on the left chest, understated Negative Split detailing on the rear neckline, and a minimal NS mark on the back right for a clean, elevated aesthetic guaranteed to catch a second glance.
Second-Skin Comfort: Sweat-wicking, ultra-fast drying, and exceptionally breathable to help regulate temperature through hard sessions and race conditions.
Designed To Be Remembered: Built not just for performance, but for that incredible race day feeling — the early morning, the nerves, the energy on the start line, are the moments that stay with you long after you finish. Perform and look your best with the Sonic Pro Singlet.
Designed by and for runners chasing more from themselves. Quietly confident, relentlessly technical, and ready for your fastest days.
Product Details
Material: Premium ultra-light technical performance fabric.
Colour: Sonic Blue artistic finish.
Fit: Race fit engineered for unrestricted movement.
Branding: Blurred NS chest logo, rear neck Negative Split detail, subtle rear NS mark
Performance Features: Breathable, moisture-wicking, ultra-lightweight, fast drying.
Care: Gentle / Hand wash to get the most life out of your singlet. Machine washable.
Created for you to perform on race day.
Start Strong, Finish Stronger with the Sonic Blue Pro Race Day Singlet.
Built for the days that matter most.
Introducing the Pro Sonic Singlet — our pinnacle performance piece, designed for runners who demand everything from their race kit without compromise. Laser cut, seamless construction with the most lightweight, technical, and premium fabric on the market, this singlet was created to disappear while you perform at your best. Developed after multiple iterations over the last year. We proudly bring our Race Day singlet to market.
Material: Premium ultra-light technical performance fabric.
Colour: Sonic Blue artistic finish.
Fit: Race fit engineered for unrestricted movement.
Branding: Blurred NS chest logo, rear neck Negative Split detail, subtle rear NS mark
Performance Features: Breathable, moisture-wicking, ultra-lightweight, fast drying.
Care: Gentle / Hand wash to get the most life out of your singlet. Machine washable.
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Frequently Asked Questions
Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout.
We ship daily, midweek. Within Ireland, expect your order to arrive within 2 working days.
We do our best to provide as much information as possible with photos and descriptions to take any guesswork out of our products whilst shopping online. We are happy to refund / swap sizes if there is any issues. Just get in touch, we're more than happy to help.
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