Hytro, a London-based startup pioneering wearable Blood Flow Restriction (BFR) technology, has raised €2.3 million (approx. £2M) in a round backed by athlete-led syndicates Joyned Capital and Skin In The Game.
The round includes investment from Arsenal FC’s Jurrien Timber, his twin brother Quinten Timber (Feyenoord), and NFL player Benjamin St-Juste (LA Chargers).
They join a roster of existing athlete investors including Sam Warburton, Cameron Norrie, and former Premier League players Scott Dann and Martin Kelly.
From labs to locker rooms — and now global
Founded in 2018 by Warren Bradley and Raj Thiruchelvarajah, Hytro develops wearable BFR devices that help athletes train and recover more efficiently. The tech, originally confined to clinical and lab settings, is now used across Premier League, WSL, MLS, NFL, and even space missions.
The company recently secured a U.S. patent, and CEO Thiruchelvarajah says revenue is growing at 80% YoY, driven by demand from elite teams and college programs worldwide.
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Simpler, scalable recovery tech backed by science
Hytro’s device uses adjustable occlusion to restrict blood flow during training or recovery, stimulating hormonal response, flushing out lactic acid, and improving muscle and joint recovery. When paired with ice baths, the product reportedly improves energy levels by 23% and reduces muscle soreness and joint pain more than cold therapy alone.
The wearable is wireless, battery-free, and designed for daily use across high-performance sports, rehabilitation, and personal fitness.
“This is athlete-backed, not just athlete-endorsed”
“This isn’t just another wearable,” said Thiruchelvarajah. “This is a business athletes believe in, invest in, and grow with — because they’ve experienced the impact first-hand.” Investors echoed the sentiment: “Simple, proven, and already trusted by the world’s best,” said Joyned Capital founder Jason Esseboom.
