Get the most from your Hytro.
Everything you need to fit, use and look after your product - from your first strap-in to full protocols. Ten minutes here and you are set for every session.
Before. During. After.
Blood Flow Restriction changes what light work does to your body. Apply it before, during or after exercise and you unlock a different benefit each time.
Warm up faster.
BFR during your warm-up drives blood into muscles and tendons more effectively than stretching alone - priming tissue for high intensity work and reducing joint pain by up to 38%.
Light loads, heavy results.
Restricting blood flow makes light weights and gentle cardio work like heavy training. More muscle fibre activation, similar adaptations - without loading your joints.
Start recovery instantly.
BFR after exercise boosts recovery hormone production. Release the strap and the pressurised flush clears waste from the muscle and drives fresh nutrients in - anywhere, any time.
Strapping in - one strap, and you are locked in.
The straps are built into every Hytro product - nothing to thread, nothing to carry. One strap per limb, fastened in a single movement.
BFR Performance Shorts
Lower body
- Attach the strap.
One strap per leg, built in and anchored at the high point of the inner thigh. It is already where it needs to be.
- Pull inside-out, across the front.
Take the strap outward across the front of your thigh in one continuous sweep - no wrapping, no doubling back.
- Press the tab onto the patch.
Push it down flat, securely rub, and you are set.
- Lift and unstrap to release.
Lift the tab and the pressure is gone in under a second.
Dial in your pressure: two patch positions give you two settings. Use the one that feels like a firm squeeze - around 7 out of 10 tightness. Pressure, never pins and needles.
BFR Training T-Shirt
Upper body
- Attach the strap.
Built into each sleeve and anchored on the inside of the upper arm - the same integrated system, sized for the arm.
- One sweep across the front.
Pull the strap outward across the front of the upper arm in a single movement and keep hold of the tension.
- Fasten on the outer arm.
Press the tab onto the patch on the outside of the arm until it sits flat.
- Lift and peel to release.
Same instant release - lift the tab and blood flow returns immediately.
Same rule up top: a firm, even squeeze around the arm.
When to strap in - and for how long.
You do not need to change what you already do. BFR layers onto your existing warm-up, session and cool-down. Start conservative, build familiarity, then push.
During your warm-up
- Strap in for your usual mobility and priming drills
- Unstrap before your first working set
Light load, high reps
- Use around 20-40% of your usual load
- Rest 30-60 seconds, straps stay on through rests
- Release at the end of each exercise - 2-4 exercises is plenty
Straight after the session
- Seated, or during gentle movement
- The release flush is where the recovery happens
- Stacks with ice baths, sauna and contrast bathing
Full pressure. Full control.
Validated safe - no supervision needed.
Hytro is the only BFR product validated as safe to use without supervision, which is exactly what makes it work at home, in the gym, on the bus and in the changing room. The pressure is consistent, no pumps or wires - you are always in control, and release is instant.
Neal et al., 2023- 01Aim for a firm squeeze - around 7 out of 10. Discomfort that builds with work is normal; sharp pain is not.
- 02Release immediately if you feel pins and needles, numbness, or your limb changes colour beyond a normal training flush.
- 03Work in short cycles and release fully between rounds - the benefit comes from restriction and release, not marathon holds.
- 04If you are pregnant, have a cardiovascular or clotting condition, or take blood-thinning medication, speak to a clinician before using BFR.
Care for it like kit, not like a gadget.
Your Hytro is built to be trained in, sweated in and washed like the rest of your kit - with two habits that keep the strap system sharp.
- Fasten each tab to its patch before washing
- Machine wash cold with similar colours
- Hang to dry
- Keep the fastening patches free of lint and fluff
- Fabric softener and bleach
- Tumble drying on heat
- Ironing over the straps or tabs
- Leaving tabs unfastened in the wash
Full instructions live on the Product Care page.
Key BFR questions, answered.
What is Performance BFR?
BFR started as a rehabilitation tool. As the research base grew, so did its use across elite sport - and "Performance BFR" is the result: heightened exercise preparedness, improved training adaptations, effective pain modulation and faster recovery, all from one method.
How does it actually work?
The strap partially restricts blood flow out of the working limb while you move. Before exercise, that drives blood into muscles and tendons to prepare them. During exercise, it makes light loads recruit muscle like heavy ones. After exercise, the build-up and release flushes waste out and pulls fresh, nutrient-rich blood in.
Is BFR safe?
Used as designed, yes. Hytro is the only BFR product validated as safe to use without supervision (Neal et al., 2023) - which is what makes it the most versatile and scalable BFR solution available. Follow the pressure and release cues above, and check with a clinician first if you have a relevant medical condition.
Do I need to change my training?
No - that is the point. Strap in during the warm-up you already do, drop the load on exercises you already know, or wear it while you cool down. The protocol library gives you day-one plans for all three if you want structure.
How tight should it be?
Consult the protocol guides and use the appropriate settings for each modality.
More questions? Visit the FAQ page.
Ready when you are.
Better prepared. Better recovered.
Not sure which product fits how you train? Two minutes of questions gets you a recommendation and the protocols to match.