About us
About BlackLine Swim
Built for swimmers who care about efficiency, not just effort
BlackLine Swim exists to help swimmers and triathletes move through the water with more control, less wasted energy, and confidence that their training is actually working.
Our story
BlackLine Swim was founded by brothers Nolan and Kilian Carrel — lifelong swimmers who grew up obsessed not just with swimming harder, but swimming smarter.
From a young age, we were drawn to the details that actually make a difference: body position, feel for the water, efficient force application, and the ability to hold form when fatigue sets in.
As our careers progressed, we kept seeing the same issues — swimmers and triathletes working hard, following generic plans, and using equipment that promised improvement but often created new problems, especially unnecessary shoulder strain.
That led us to the Vélocité paddles — a lightweight, high-performance design that finally aligned with how we believed swim equipment should work: clean feedback, purposeful resistance, and zero gimmicks.
More than equipment
Gear alone doesn’t fix technique.
Today, BlackLine Swim combines high-quality swim equipment with online coaching and structured training — particularly for triathletes who want to exit the water fresher, faster, and in control.
Our coaching focuses on diagnosing what’s actually slowing you down, removing wasted effort, and giving you a clear plan you can execute in your own pool.
Our philosophy
We believe most swimmers don’t need more laps — they need better direction.
Whether it’s coaching or equipment, everything we create is designed to improve how you move through the water, reduce energy leaks, and make your training feel purposeful instead of random.
What we do
The Swim Blueprint
A diagnostic starting point that shows you what’s holding your swim back and what to focus on first.
Online coaching
Personalised plans, technique feedback, and clear priorities — built for real schedules and real athletes.
Vélocité swim paddles
Lightweight, shoulder-friendly paddles designed to reinforce clean mechanics and better feel for the water.
Who BlackLine is for
- Triathletes who want to stop burning matches in the swim
- Adult-onset swimmers serious about improving efficiency
- Athletes who value clarity over generic programs
- Swimmers who care about long-term progress and shoulder health
Trusted by swimmers, triathletes, and coaches worldwide, BlackLine Swim is committed to giving athletes the tools, guidance, and confidence to reach their full potential in the water.