Proven Arm Protection
The Kinetic Arm is the ultimate game-changer in arm care and protection for baseball players, as the world's first and only dynamic arm stabilizer that has proven to reduce arm stress that can lead to fatigue, pain, and overuse injuries.
Designed to combat the growing arm injury epidemic in baseball, this revolutionary sleeve is engineered to stabilize both the elbow and shoulder without restricting movement. The Kinetic Arm provides dynamic support that is activated when the arm is in the most vulnerable ranges while throwing and swinging. Offering a powerful solution for protection, performance, recovery, and injury prevention.
Impressive Solution
Advancing Arm Care
The rise of overuse injuries in baseball has reached epidemic levels, with players at all levels, from youth to the majors, experiencing arm issues at an alarming rate. Common overuse injuries include UCL tears, rotator cuff strains, and labrum injuries, often leading to long-term damage or surgery. The Kinetic Arm offers the most promising, science-backed solution to this growing problem. Players can now safeguard their arms while optimizing performance—ushering in a much-needed evolution in baseball arm care.
TIME FOR EVOLUTION
Current efforts to prevent injuries aren't working as demands on athletes have intensified with year-round participation, travel ball, and the chase for velocity. Despite pitch count regulations, throwing limits, and advanced training protocols, arm injury rates continue to rise from youth leagues to the majors. Technological advancements help monitor workloads, but they overlook key variables like structural limitations, growth spurts, and physiological adaptations. To truly make a difference, we need to start offloading arm stress externally, alongside existing injury prevention strategies.
The Kinetic Arm incorporates MuscleWeb® activated stabilizing technology, a flexible, multi-directional support system designed to protect the elbow and shoulder during dynamic movements without restriction. Its multi-patented design delivers activated stabilization in the arm’s passive ranges, where stress is highest, reducing strain and injury risk. This unique combination of unrestricted mobility and joint support makes the Kinetic Arm essential for safeguarding athletes' arms while optimizing their performance.
With over a decade of research and testing, Kinetic Arm dynamic arm stabilizers are backed by robust data and published studies proving their effectiveness in reducing dynamic arm stress. All findings have been rigorously validated by research and medical professionals, ensuring their credibility and impact.
PUBLISHED RESEARCH
WHITE PAPER
Abstract Study - Tested and Evaluated by Medical and Research Professionals.
PILOT STUDY
Dynamic Arm Stabilizer Pilot Study - Conducted by the University at Texas at Tyler.
CASE STUDY
Dynamic Arm Stabilizer Case Study - Conducted by the University at Texas at Tyler.
PROVEN BENEFITS
REDUCE ARM STRESS
The Kinetic Arm has proven benefits for reducing arm stress by offering dual-joint support to both the elbow and shoulder during the high-stress phases of throwing and swinging in baseball. Its unique MuscleWeb® design, provides external support to actively reduces arm strain helping to minimize the risk of common overuse injuries like UCL tears, rotator cuff strains, and Little League elbow.
OPTIMIZE PERFORMANCE
Wearing the Kinetic Arm helps optimize performance by improving mechanics and reducing arm stress during high-intensity movements like throwing and swinging. By stabilizing the elbow and shoulder, it allows athletes to get the necessary reps to build strength and power without overloading the arm. Enabling athletes, especially pitchers to gain and sustain velocity while minimizing the excess wear and tear that typically leads to fatigue and injury.
RECOVERY & PREVENTION
The Kinetic Arm speeds up recovery and prevents injuries by providing external support to the elbow and shoulder, reducing strain during high-stress movements. It stabilizes joints in vulnerable positions, preventing overuse injuries and aiding recovery by minimizing stress that can lead to inflammation. This protection allows for safer training, reduces fatigue, and supports long-term arm health.
DOCTOR RECOMMENDED
★★★★★"The Kinetic Arm definitely shows promising uses for not only rehab professionals but also for performance coaches. I foresee this ushering a new era of health and performance for throwing athletes."
Dr. Ryan Balmes![ryan_balmes.webp]()
DPT, Board Certified Clinical Specialist in Orthopedics and Sports Physical Therapy
★★★★★“Kinetic arm has been instrumental in my rehab protocol for Ulnar Collateral Ligament reconstructions. We have also had great success in unloading our pitchers - its a new frontier.”
Dr. Rick Lehman![]()
MD, Orthopedic Surgeon and Medical Director of Webster Surgery Center and the U.S. Center for Sports Medicine
★★★★★"The data shows that the Kinetic Arm could definitely have an impact in reducing throwing overuse injuries."
Dr. Lawrence Lemak![lemak_360x.webp]()
Co-Founder of American Sports Medicine Institute & The National Center for Sports Safety
★★★★★"The Kinetic Arm is a literal game changer for the overhead athlete. It can reduce harmful stress on the elbow while allowing for intense and sustained practices. I strongly recommend this product for training and rehab to ensure the long term health of my overhead athletic patients."
Dr. Tyler Wallace![Tyler Wallace Physical Therapist Kinetic Arm Testimonial]()
DPT, CSCS
★★★★★"As a double board certified Orthopedic Sports Medicine Surgeon it is a blessing to have resources to treat my elite and everyday patients that is consistently delivering amazing results."
Dr. Phillip Langer![Dr. Phillip Langer MD., MS, FAAOS]()
MD,. MS, FAAOS
★★★★★"I have now used it with a variety of my athletes in physical therapy and have seen it reduce pain with throwing from a 7/10 to a 0/10 by just simply putting it on. Rehabbing shoulder injuries in competitive throwing athletes can be a challenge because of the stress involved with the throwing motion, but with the Kinetic Arms' ability to offload stress while allowing proper biomechanics and full ROM, the process can be streamlined with better outcomes. Highly recommend 10/10!"
Dr. Nathan Teter![Dr. Nathan Teter APEX Physical Therapy Review on Kinetic Arm]()
PT, DPT - APEX Physical Therapy
★★★★★"Clinicians that recommend using the Kinetic Arm will get their athletes back into play sooner and reduce the risk of re-injury. I highly recommend using this as an easy solution for injury prevention."
Dr. Jason Weeks![]()
DC, owner of Marietta Physical Rehab and Team Physician of X3 Sports
★★★★★"Excellent product. I have searched high and low for good adjuncts to care to get my athletes back on the field as quickly and safely as possible and have finally found an awesome product to aid in injury prevention. Not to mention one that finally has some research popping up to back it. The Kinetic arm has been a game changer in my care plans for players returning from surgery or injury along with the athletes who are experiencing medial elbow discomfort with valgus stress or shoulder problems. I highly recommend this product!"
Dr. Alex Beebe![alex.png]()
PT, DPT, OCS, CSVS, CMT
★★★★★"I have been a Physical Therapist for over 20 years. I worked with a shoulder specialist, have been OCS certified since 2010, am a Champion Performance Specialist, and am a Certified Arm Care Specialist. More importantly, I am a father whose son plays high school and travel baseball. My son had an arm issue. We have used the kinetic arm essentially every throw he has made for the last 2 years. He wears it during the games and at every practice. It has been a game changer for my son and essentially all my patients in the last 2 years that have had arm issues."
Dr. Shannon Loy![]()
TP, MPT, OCS Clinical Director at Advance Rehabilitation
It is crucial for young athletes to wear the Kinetic Arm because it provides essential support and protection during a time when they are still developing physically and learning proper mechanics. As children engage in repetitive throwing and swinging motions, they are at a higher risk for overuse injuries such as Little League Elbow and Little League Shoulder, particularly during growth spurts. The Kinetic Arm helps stabilize the elbow and shoulder joints, reducing stress and strain on critical ligaments and muscles. By wearing this dynamic arm support, young athletes can improve their performance by optimizing their mechanics and safeguard their arm health, allowing them to continue playing the sport they love while minimizing the risk of injury.
The Kinetic Arm is worn by athletes in both practice and games, including pitchers, catchers, and position players, from Little League to Division 1 levels. Designed for comfort and performance, the Kinetic Arm easily fits under uniforms, allowing players to wear it without restriction during competition. This lightweight, non-restrictive arm protective device ensures full mobility while providing critical support to the elbow and shoulder, making it ideal for athletes who want to protect their arms without compromising performance. Whether on the mound, behind the plate, or in the field, the Kinetic Arm offers dynamic support to reduce arm stress and aid in injury prevention.
The Kinetic Arm is worn and trusted by professionals across all levels of baseball, from Little League World Series participants to Major League Baseball stars. Over the years, the Kinetic Arm has gained significant recognition in Japan, particularly in Nippon Professional Baseball (NPB), where notable athletes, including Shota Imanaga, currently with the MLB, wear it for effective workload management and recovery to protect their arms. Its proven effectiveness has led to widespread adoption in professional training programs across MLB, MiLB, NPB, NFL, ATP, and other elite leagues both nationally and internationally.
CHOOSE YOUR STABILIZER
K2 Adult SLeeve
The K2 Adult Sleeve is designed for optimal protection and performance. This dynamic stabilizing sleeve boasts a slim, lightweight profile crafted from a durable bio-knit weave fabric, featuring multi-stretch ventilation zones that provide comfort during practices and games while worn under a uniform. Each sleeve is equipped with an adjustable detachable body strap, allowing for a customized fit.
K2 Youth SLeeve
The K2 Youth Sleeve is engineered for both protection and performance. This dynamic stabilizing sleeve features a slim, lightweight design made from moisture-wicking fabric, ensuring comfort during practices and games while worn under a uniform. Additionally, it comes with an adjustable detachable body strap, allowing for a customized fit.
FREQUENTLY ASKED QUESTIONS
Size recommendations are generally based on height and weight.
Measurement guidelines and chest extension straps are available on shop page. If you need assistance, please send us a message and we can help make a sizing recommendation.
We offer a 14-day return policy for return and size exchange requests. Please refer to our Return Policies for details.
The Kinetic Arm features a multi-patented MuscleWeb® design that mimics natural anatomical functions, providing reinforcement to muscles, ligaments, and joints for safer motion and reduced arm stress. This innovative technology uses strategically placed polymers to deliver targeted, multi-directional support to the elbow and shoulder, stabilizing joints during dynamic movements. The flexible web design offers activated support in vulnerable positions, offloading strain from critical areas while promoting optimal movement mechanics. This external reinforcement minimizes the risk of fatigue, pain, and overuse injuries, allowing athletes to maintain full range of motion and alleviate stress during repetitive arm actions.
The Kinetic Arm helps optimize mechanics by promoting safer anatomical ranges of motion, improving joint alignment, and stabilizing the elbow and shoulder to reduce dynamic arm stress. Its embedded MuscleWeb® design provides a web of support without restricting movement, reinforcing the arm and encouraging efficient movement patterns. In overhand throwing, where fatigue can cause the arm to lag behind during body rotation—leading to excess stress on the elbow, shoulder impingement, and strain on the labrum—the Kinetic Arm reinforces these vulnerable areas, helping athletes maintain better mechanics and safer ranges of motion. This makes it a valuable tool for athletes striving to protect their arms and enhance performance.
Because the Kinetic Arm helps to optimize mechanics and reduce arm stress it allows athletes to build strength and get more reps in with less fatigue and strain on their arm, so they can have a safer approach in gaining and sustaining velocity.
Athletes that have worn the Kinetic Arm have claimed it has helped them gain and sustain velocity over time, because they were able to train with higher intensity and safer progressions, because they have less arm stress and fatigue.
No. The Kinetic Arm is not a performance enhancer, it is a protective device designed for the shoulder and elbow to help reduce dynamic arm stress.
The Kinetic Arm does not influence skill, change delivery, technique, strength, conditioning, or overall training.
This stress reduction sleeve, helps to safeguard the arm to help aid in arm overuse injury prevention.
Wearing the Kinetic Arm promotes safer anatomical movement by encouraging cleaner arm mechanics and reducing stress during critical phases of dynamic movements like throwing, swinging, serving, and hitting. It provides activated support when stress is at its peak in vulnerable passive ranges, helping to protect the arm from strain and overuse.
Rules are at discretion in different sports and leagues.
With regards to baseball there are no rules stating that you cannot wear a sleeve underneath uniform. As long as it is a solid color and is not distracting to the hitter.
The Kinetic Arm braces and sleeves have been worn in game in Little League up to Division 1 because it does not violate rules or regulations. Major Leaguers have worn the Kinetic Arm and are just required to wear their sponsored uniforms over it.
The Kinetic Arm is not a neoprene sleeve or rigid brace, it is a safeguard for the arm for throwing and swinging athletes.
MLB Official rules: 3.03 Player Uniforms (e) Sleeve lengths may vary for individual players but the sleeves of each individual player shall be approximately the same length; no player shall wear ragged, frayed or slit sleeves; and no pitcher shall wear sleeves that are white, gray, nor, in the judgment of an umpire, distracting in any manner.
NCAA RULES
Uniforms SECTION 14: Any part of an undershirt exposed to view shall be of the same solid color other than white. Sleeve lengths may vary for each individual, but each player
must wear sleeves of approximately the same length (torn or ragged sleeves are
prohibited). Compression-type sleeves, if worn by a pitcher, must be covered
by an undershirt or worn on both arms. A uniform shall not contain a pattern
that imitates or suggests the shape of a baseball.
NFHS Rules: Section 4 - UNIFORMS: 1-4-2 For individual players, uniform sleeve lengths may vary. However, sleeves of each individual player shall be approximately the same length and shall not be ragged, frayed or slit. If the pitcher’s undershirt sleeves are exposed, they shall not be white or gray. Compression sleeves that are solid black or solid dark-colored shall be the only colors allowed to be worn by the pitcher below his elbow. A pitcher shall not wear any item on his hands, wrists or arms which may be distracting to the batter. A pitcher shall not wear white or gray exposed undershirt sleeves or any white or gray sleeve that extends below the elbow. A vest and coordinating shirt that is worn underneath is viewed as a type of uniform top.
Little League Rules:
Rule 1.11a (3) Any part of the pitcher's undershirt or T-shirt exposed to view shall be of solid color. The pitcher's undershirt sleeves, if exposed, shall not be white or gray. Neoprene, if worn by a pitcher, must be covered by undershirt.
The Kinetic Arm K2 Sleeve is not a Neoprene sleeve.
K1 Brace - Polyester, Silicone, Spandex, Nylon, Polycarbonate, and TPR Neoprene seams.
K2 Adult Sleeve - Nylon, Polyester & Spandex
K2 Youth Sleeve - Nylon & Spandex.
No. The Kinetic Arm brace does not restrict motion or change delivery.
(If any restriction in range of motion is felt, simply shift the chest part of the sleeve an inch or two towards the dominant arm or loosen the strap).
This combined elbow shoulder brace is designed to allow full range of motion without restriction. Engineered with flexibility in mind, this dynamic sleeve is designed to synchronize with various arm actions.
No. Wearing the Kinetic Arm will not cause reliance or dependency.
Athletes are still be able to build strength and the necessary physical adaptations, because they still have to use their muscles to generate that force for that movement. In other words, the Kinetic Arm does not assist to move your arm for you.
There have been no signs or reports of muscle atrophy with long term use, because of the force generated that is required to move the arm during arm motions such as throwing, swinging, serving and hitting.
Peak stress happens in passive ranges during dynamic arm movements.
The Kinetic Arm is designed to give activated support to the elbow and shoulder in these ranges to help dampen arm stress.
If you are at all concerned about dependence or reliance, just use it on and off as a workload management tool especially on heavier workload or recovery days.
The Kinetic Arm stands apart from traditional arm braces or sleeves due to its innovative, multi-patented MuscleWeb® technology. While traditional braces or sleeves typically support only one joint (either the elbow or shoulder) and often restrict movement, the Kinetic Arm provides dynamic, multi-directional support to both the elbow and shoulder simultaneously, without limiting range of motion. This external web of support helps optimize mechanics, reduces arm stress, and minimizes the risk of fatigue, pain, and injury. It's the only arm support scientifically proven to offload dynamic arm stress while allowing athletes and active individuals to perform at their best.
