B Strong

What B Strong does

B Strong is a private consumer health and sports performance company founded in 2017 and headquartered in Park City, Utah, operating through the legal entity Stray Whales, LLC. The company sells a patented Blood Flow Restriction (BFR) training system built around elastic compression bands that partially restrict venous blood return during low-load exercise, eliciting strength and hypertrophy adaptations comparable to heavy resistance training. The system was co-developed by Dr. Jim Stray-Gundersen, an Olympic physician with 35+ years in sports medicine, and Sean Whalen, who serves as CEO.

The core product line consists of the Individual Pack for direct-to-consumer buyers and the Trainer Pack (8 BFR bands at $999.92) for professionals, both built on a patented multi-chamber air-baffle design (US Patents 11,395,662 and 11,207,237) engineered so that bands cannot fully occlude arterial blood flow, addressing the primary safety objection to traditional BFR cuffs. The hardware is complemented by the B Strong mobile app, which delivers personalized pressure guidance through an algorithm based on user biometrics, and by accredited BFR certification courses (BOC, NASM, NSCA, AFAA). Revenue is generated through one-time hardware sales, an annual mobile app subscription with auto-renewal, and professional certification fees.

B Strong serves four primary segments — elite athletes and professional sports organizations, fitness enthusiasts, rehabilitation and physical therapy patients, and trainers and wellness practitioners — through a Shopify-powered DTC storefront, field sales of Trainer Packs to clinics and training facilities, international shipping, and a certified ambassador network. Named customers and endorsers include Alabama Crimson Tide, WWE, Cubs, Red Sox, Warriors, Mayo Clinic, Johns Hopkins, HSS, U.S. Army, SOCOM, Mark Wahlberg, and Sarah Hendrickson.

Name

B Strong

Legal name

Stray Whales, LLC

Website

https://bstrong.training

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Short description

B Strong is a Utah-based private company that sells patented Blood Flow Restriction (BFR) elastic band training systems, a mobile guidance app, and accredited certification courses to consumers, elite athletes, rehabilitation patients, and sports medicine practitioners via DTC e-commerce and trainer/clinical channels.

Ownership category

akta.pro rank

Product category

Blood Flow Restriction Training Equipment

NAICS

Electromedical and Electrotherapeutic Apparatus Manufacturing (334510)

SIC

Sporting & Athletic Goods, Nec (3949), Surgical & Medical Instruments & Apparatus (3841)

akta.pro primary industry

Strength Training Equipment Retail (Racks, Benches, Barbells, Plates) (CRAMADAB)

akta.pro secondary industries

Strength & Conditioning Personal Training (HSADAAAB), Compression Therapy & Lymphedema DME (Garments, Pneumatic Pumps) (HLAHAMAH)

Keywords

• Blood flow restriction training
• BFR training equipment
• Elastic compression bands
• Sports recovery devices
• Rehabilitation training tools

Headquarters

HQ city

Park City

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Marketing or Sales, Personnel, Operations, Technology or R&D

Revenue model

1. Hardware Equipment Sales: One-time sale of BFR training equipment including Individual Packs, Trainer Packs, and replacement bands. Hardware includes the B Strong bands, hand pump, and carrying case. Individual Pack for consumers, Trainer Pack (8 bands) for professionals at $999.92.
2. Mobile App Subscription: Annual license fee for Mobile App with automatic renewal. License code provided with equipment purchase. Includes access to guided intro program, pressure recommendations, and exercise protocols.
3. Certification Courses: BFR Training Theory and Application Course for professionals seeking certification. Accredited for continuing education (BOC, NASM, NSCA, AFAA). Includes seminar course component with trainer pack.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels9 records

Core offering

B Strong designs, patents, and sells a Blood Flow Restriction (BFR) Training System consisting of elastic compression bands, a hand pump, and a mobile guidance app that delivers strength and hypertrophy benefits with light loads. It also sells a professional Trainer Pack with eight bands and offers an accredited BFR Training Certification Course for practitioners. The hardware is paired with an annual mobile app license subscription.

Product overview

B Strong offers a unified Blood Flow Restriction (BFR) training system centered on patented elastic compression bands that partially restrict venous blood flow during exercise to trigger a systemic anabolic hormonal response. The core product line consists of the B Strong Training System (Individual Pack) for consumers and the Trainer Pack (8 BFR Bands) for professionals, both using the same patented multi-chamber band design. The ecosystem is extended by the B Strong mobile app, which provides algorithmic pressure guidance and workout tracking, and an accredited certification course for practitioners. The company operates on a licensing model: hardware is purchased (with a 1-year subscription included) and the mobile app requires a license fee with annual auto-renewal.

Differentiator

Problem solved

Functional benefit

Products and services

• B Strong Training System (Individual Pack) Blood Flow Restriction training kit for individual consumers, consisting of patented elastic compression bands, a hand pump, carrying case, and access to the B Strong mobile app for guided workouts and personalized pressure settings.
• B Strong Trainer Pack (8 BFR Bands) Professional Blood Flow Restriction training package containing 8 BFR bands (one pair each of sizes 1-4), 2 hand pumps, 1 carrying bag, a 21-day free demo program, and the Introduction to BFR Accredited Training Course (BOC, NASM, NSCA, AFAA) priced at $999.92 USD.
• B Strong Mobile App Mobile application with a pressure algorithm that calculates individualized pressures based on user biometrics and session feedback, delivering structured BFR workout protocols, progress tracking, and pressure recommendations.
• BFR Training Certification Course Accredited professional training course (BOC, NASM, NSCA, AFAA) covering the theory, mechanisms, and applications of Blood Flow Restriction training, including a seminar course component and a trainer pack.

Quantifiable outcome

• 18.4% strength increase following 16 weeks of LL-BFR training
• +7 more outcomes

Named customers21 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• Sean WhalencoreStrategic or Co-development PartnerCo-founder partner who developed the B Strong BFR Training System alongside Dr. Jim Stray-Gundersen. Partner in intellectual property and business development.
• Stray Whales, LLCcoreOthersLegal entity name of (B)STRONG. Parent company owning intellectual property, trademarks, and operating the B Strong business.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Therabody: Therabody (Theragun) is a leading consumer recovery and wellness brand selling percussion devices and adjacent modalities. Comparable as a premium recovery hardware brand with retail distribution and athlete marketing that overlaps with B Strong's positioning.
• Hyperice: Hyperice is a large, well-funded recovery technology brand selling percussion, vibration, and compression devices to athletes and consumers. Comparable as a premium sports recovery hardware brand with similar elite-athlete endorsements, though its product line does not include BFR bands.
• Normatec (Hyperice): Normatec dynamic compression boots target athlete recovery and consumer wellness. Adjacent to B Strong's compression-based recovery positioning and shares the same athlete and clinic customers.

Emerging players

• Caresoma: Caresoma sells consumer-grade BFR training cuffs aimed at the home fitness market. Overlaps with B Strong's Individual Pack segment on product, customer (fitness enthusiasts), and price-conscious positioning.
• Smart Tools Plus / SmartCuffs: Smart Tools Plus markets BFR cuffs and accessories to personal trainers and rehab professionals. Comparable product category and trainer-channel go-to-market to B Strong's Trainer Pack motion.
• VALD Health: VALD Health builds force plate and human measurement technology (ForceDecks, NordBord) sold to sports performance and rehab clinics. Comparable as a hardware-plus-software ecosystem serving the same sports medicine and PT customers as B Strong's Trainer Pack.

Direct peers

• KAATSU Global: KAATSU Global is a pioneer in blood flow restriction training equipment, offering pneumatic BFR bands and the KAATSU Cycle device. Directly comparable to B Strong as both sell consumer and professional BFR training systems targeting athletes, rehab patients, and trainers.
• Owens Recovery Science: Owens Recovery Science is the U.S. distributor of the Delfi PTS BFR system and runs BFR certification courses for clinicians. Overlaps with B Strong's certification course offering and rehab-targeted Trainer Pack sales.
• Delfi Medical Innovations: Delfi manufactures the Personalized Tourniquet System (PTS) for clinical BFR and surgical tourniquet use. Comparable as a BFR equipment provider serving the rehab and orthopedic channel where B Strong also has traction (e.g., HSS, Mayo).

Others

• Exos (Performance Sports): EXOS is a sports performance and human performance coaching firm that is itself a B Strong customer. Comparable as an adjacent ecosystem participant — a training-services buyer that resells BFR programming to its athlete clients.

Market position

Strengths3 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/bstrongtrainingsystem
• Instagraminstagram.com/bstrongbfr
• YouTubeyoutube.com/@bstrongbfrtraining
• Xx.com/bstrongtrain
• LinkedInlinkedin.com/company/bstrongbfr

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about B Strong