BFR Bands for
Strength Training
The bands used in every Seli Strength workout. Built for home and gym training. No clinic required.
Product features:
The best BFR bands for safety, comfort, and ease of use. — Coach Seli
Snug compression, not tight. No pain, no pinching. If it hurts, the pressure is off. Adjust and go.
Segmented, multi-air chamber design keeps band pressure consistent and comfortable —and cannot cut off blood flow, even at the highest pressure. The only BFR band rated safe for personal home and gym use without clinical supervision.
Hand pump with built-in pressure gauge. Inflate until the needle hits your target number. Solo application takes under a minute.
Kit includes 2 arm bands, 2 leg bands, hand pump, and carrying case.
Same bands used in fitness, physical therapy, sports medicine, and collegiate and professional athletic programs.
30-day money-back guarantee. 12-month warranty
$519
Why We Use B3 Sciences Bands
“I’ve spent 30 years coaching strength. I’ve tried all the different styles of BFR Bands out there. B3 Sciences are the only BFR bands I will put on my clients because of how safe, comfortable and effective they are.”
~ Coach Seli
Multiple Air Chambers
B3 Sciences BFR bands use multiple segmented air chambers made from semi-elastic material. The elastic material moves with the muscle as it contracts, keeping pressure consistent and comfortable throughout the movement — and because of the multiple air chamber design, they physically cannot cut off blood flow, even at the highest pressure. Most other BFR bands use a single, rigid air chamber. When muscles contract and swell against them, pressure spikes inside the muscle, causing significant discomfort and restricting circulation in ways that aren't safe for unsupervised use. .
You Can Apply Them Yourself
B3 Sciences bands inflate by hand pump to the pressure printed on the gauge — no app, no second person, no calibration guesswork like that required by most BFR cuff systems. Application of all four bands takes about a minute.
Waterproof. Easy to Clean.
Bands can be worn in water, washed with mild soap, or wiped with alcohol.
Used in Clinical and Professional Settings
B3 Sciences bands are designed for independent home or gym use — no clinical setup required. The same bands are used in fitness, physical therapy, sports medicine, and collegiate and professional athletic programs.
How to Choose Your Size
Measure your upper arm near the armpit, above the bicep and below the deltoid. Measure your upper thigh at its widest point. Use those two measurements with the chart below.
How to Put On Your Bands
Four steps. Under a minute.
Strap the arm bands on your upper arms and leg bands on your upper thighs. Snug, not tight. Firm compression is the goal, not pain or pinching. If you can slide the band up or down without moving your skin, it’s too loose.
Connect the pump to the band valve.
Inflate to the pressure printed on the blue pull tab. This is your starting pressure. Adjust up to create more fatigue or down for comfort.
Check the fit. Firm pressure is normal. Numbness or tingling means the bands are too tight — deflate slightly and readjust.
Bands can be worn over one thin layer of clothing — leggings or a t-shirt — or directly on skin.
Who Uses BFR Bands
BFR bands were built for anyone who wants the benefits of strength training without the physical cost of heavy lifting. That’s a broader group than people expect.
Women in midlife
Hormonal changes during perimenopause and menopause affect how muscles respond, how joints feel, and how long recovery takes. BFR training for women over 50 produces real muscle growth and bone density gains using light weights — without loading joints the way conventional lifting does.
Anyone who wants to build muscle faster
BFR training triggers the same muscle-building response as heavy lifting at a fraction of the load. For people who want results without long sessions or heavy weights, that’s what produces the result.
People managing joint pain or limitations
Arthritis, chronic knee or shoulder issues, recovery from surgery — these all limit how much load someone can safely train with. BFR makes it possible to build and maintain strength within those limits.
Older adults
Muscle loss accelerates after 60. BFR training is one of the few methods with direct research support for building strength in older adults, including those who can’t tolerate conventional training loads.
Athletes in recovery or maintenance
BFR is used in collegiate and professional athletic programs during injury recovery and in-season maintenance to preserve muscle without adding load to connective tissue.
Fitness professionals
Personal trainers, strength coaches, physical therapists, and gym owners use BFR bands with clients who need results without heavy lifting. B3 Sciences bands are rated for personal training and clinical settings without requiring a Doppler device or clinical supervision. Adding BFR to your practice doesn’t require new equipment or a facility change.
What Members Say
"My first time using the bands was a bit daunting, but they went on quick and easy and felt comfortable right away. Now I feel like a pro athlete lifting my 3-pound weights."
— Sabrina D."The bands made me feel stronger and energized even after the first session. They're comfortable, easy to put on, and honestly they motivate me to work out more."
— Anne-Marie R."I was surprised by how comfortable the bands are — they never feel restrictive. They've helped me activate muscles I didn't know I had, and I've seen real improvements in my strength and confidence."
— Julie T.
Safety Guidelines
B3 BFR bands are rated safe for personal use without clinical supervision. As with any training tool, there are conditions that make BFR unsuitable. Review the guidelines below before starting.
BFR Contraindications:
BFR is not for everyone. Do not use BFR bands if you have any of the following:
Severe hypertension (untreated)
Active deep vein thrombosis (DVT)
Blood clotting disorders
Severe peripheral vascular disease
Pregnancy
Active lymphedema, infections, open wounds, or tumors in the affected limb (BFR may be applied to other limbs for systemic benefits)
Physician-advised restrictions on vigorous exercise
Recent serious illness, injury, or surgery without physician clearance
Recommended use:
Use light weights: approximately 20-30% of your one-rep max, or about half of what you would normally lift for 10 reps. BFR works because of the restriction, not the load.
Keep focused BFR work under 20 minutes. Introduce in short windows and build up to 20 minutes from there. More is not better.
Start with either arm bands or leg bands in your first few sessions, not all four at once.
The bands should feel snug — firm compression without pain, numbness, or tingling. If any of those occur, reduce pressure immediately.
Review the contraindications list before starting.
Want more information on safety guidelines?
See our Health & Fitness Disclaimer and Liability Waiver
Common Questions About BFR Bands
-
Each kit includes 2 arm bands, 2 leg bands, a hand pump, and a carrying case. Bands are sold as a matched arm and leg pair. See the size guide above to find your combination.
-
Measure your upper arm near the armpit and your upper thigh at its widest point. Most people order Size #2 arms and Size #3 legs. The full size chart is above.
-
Yes. The bands are sold as standalone equipment. That said, BFR training works best within a structured program. The protocol matters as much as the bands themselves. If you want guided workouts with live coaching, the Seli Strength program includes both.
-
Yes. B3 Sciences BFR bands are rated safe for personal use without clinical supervision when used correctly. Their multi-chamber design applies controlled, partial compression that slows blood return from the limb without cutting off circulation — which is why they don't require a trained clinician with a Doppler device, or an app to calibrate and monitor pressure. Most clinical-grade BFR systems do.
Research consistently shows the method is well-tolerated by healthy adults, including women with joint limitations; when applied with appropriate load and guidance, BFR side effects are minimal. Review the safety guidelines on this page before starting, and check with your physician if you have any health concerns.
-
B3 Sciences BFR bands use multiple air chambers and a wider cuff that move with the muscle, maintaining consistent pressure through the full session. Cheaper elastic straps and narrow rigid bands concentrate pressure in a small area, and because they're rigid, there's no reliable way to know if arterial flow has been cut off. Elastic and nylon straps also can't maintain consistent pressure as your muscles contract and expand which can cause pressure to drop mid-session, which limits the training effect.
-
We recommend limiting band wear to 20 minutes per session and using lighter weights. The Seli Strength program is built around this: three 20-minute strength workouts per week, plus one cardio session.
-
Yes. We offer a 30-day money-back guarantee: return bands in like-new condition with no markings. Bands also come with a 12-month warranty covering any parts that malfunction or break down within the first year.
-
B3 Sciences BFR bands are already used in fitness programming, physical therapy, sports medicine, and collegiate and professional athletic programs. They do not require clinical supervision or a Doppler device for pressure setting, which makes them practical for personal training and rehabilitation settings. Learn more: BFR for Fitness Professionals
Ready to Get Started?
Everything you need to train with blood flow restriction bands at home. Backed by a 30-day money-back guarantee.
$519