REVOLUTIONARY SUPPORT
The Kinetic Arm is the world's first and only dynamic arm stabilizer to provide unrestricted elbow and shoulder support that has been scientifically proven to reduce arm stress that can lead to fatigue, pain and overuse related injuries.
Engineered with our multi-patented MuscleWeb® technology, the Kinetic Arm delivers flexible, activated support precisely when the arm is most vulnerable during throwing and swinging. Helping baseball athletes maximize performance, recover faster and minimize arm overuse injury risks.
Impressive Solution
Future of Arm Care
The rise of overuse injuries in baseball continues, 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 new era of a much-needed evolution in baseball arm care.
Redefining Arm Care
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.
If we are ever going 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.
NO RESTRICTION
ACTIVATED SUPPORT
WATCH HOW IT WORKS
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.
RECOMMENDED BY MEDICAL PROFESSIONALS
★★★★★"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
PLAYER BENEFITS
REDUCE ARM STRESS
The Kinetic Arm offers 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 reduce arm strain, helping athletes maintain performance and reduce the impact of repetitive arm motions. This innovative technology supports both joints, allowing athletes to optimize their movements while minimizing stress that can lead to risks associated with overuse.
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 providing support to the elbow and shoulder, it helps maintain proper alignment and reduces inefficient movements. The Kinetic Arm also minimizes dynamic arm stress that can lead to arm fatigue, allowing athletes to complete the necessary reps to build strength and power without overloading the arm. This enables athletes, particularly pitchers, to maintain velocity while minimizing strain during repeated movements.
RECOVERY & PREVENTION
The Kinetic Arm supports active recovery and performance by providing external stabilization to the elbow and shoulder, reducing strain during dynamic arm movements. It helps stabilize joints in vulnerable positions, promoting proper alignment and reducing unnecessary stress. This external arm system supports recovery and aids in injury prevention by allowing athletes and active individuals to train and build strength while reducing strain that can lead to arm fatigue, discomfort, and overuse related issues.
The Kinetic Arm is worn by athletes across all levels, from Little League to Division 1, including pitchers, catchers, and position players. Designed for comfort and performance, it fits seamlessly under uniforms, allowing players to wear it without restriction during practice or games. This lightweight, non-restrictive arm support provides essential stabilization to the elbow and shoulder, ensuring full mobility while reducing dynamic arm stress. Whether on the mound, behind the plate, or in the field, the Kinetic Arm delivers dynamic support to support the arm without compromising performance.
It is essential for young baseball players to wear the Kinetic Arm Youth Sleeve because it provides targeted support during a critical stage of physical development and skill refinement. As young athletes engage in repetitive throwing and swinging, their arms can experience significant strain, especially during growth spurts. The Kinetic Arm helps stabilize the elbow and shoulder, promoting better mechanics and reducing excess stress on the arm. By reinforcing proper movement patterns and supporting the arm through dynamic motions, this sleeve allows young players to train more efficiently, build strength safely, and stay on the field longer while developing their skills.
The Kinetic Arm is trusted and worn by professionals at all levels of baseball, from Little League World Series participants to Major League Baseball stars. It has gained significant recognition in Japan, particularly in Nippon Professional Baseball (NPB), where prominent athletes like Shota Imanaga, now in the MLB, use it for recovery, performance, and protection. 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.
MEDIA COVERAGE
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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 30-day return policy for return and size exchange requests. Please refer to our Return Policies for details.
The Kinetic Arm stands apart from traditional arm braces or sleeves with its innovative, multi-patented MuscleWeb® technology. Unlike conventional arm supports that typically support only one joint (either the elbow or shoulder) and often restrict or limit 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 is designed to optimize mechanics, reduce arm stress, and minimize the risk of fatigue, pain, and injury. It is the only arm support scientifically proven to offload dynamic arm stress, allowing athletes and active individuals to perform at their best while reducing the risk of overuse injuries.
No, the Kinetic Arm does not restrict motion or alter mechanics during throwing or swinging. It is designed to provide full, unrestricted range of motion while delivering dynamic support to the elbow and shoulder. Its flexible design moves with your arm, ensuring natural movement without compromising performance or comfort. If any restriction is felt, simply adjust the chest portion of the sleeve or loosen the strap slightly for an optimal fit.
The Kinetic Arm reduces arm stress by dynamically stabilizing the elbow and shoulder during repetitive movements. Its revolutionary, multi-patented MuscleWeb® design delivers targeted support in high-stress ranges while allowing full mobility. This external support system has been scientifically proven to offload dynamic arm stress, providing multi-directional stabilization without restricting movement.
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.
The Kinetic Arm K2 sleeves are designed to meet most regulations in sports.
However, rules are at discretion in different leagues and sports.
With regards to baseball and softball, 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.
Little League Rule updated 2023 season: 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.
Materials:
K2 BioKinetic® Adult Sleeve - Nylon, Poly-Spandex blends.
K2 BioKinetic® Youth Sleeve - Nylon & Spandex blends.
The Kinetic Arm is designed to be worn during training sessions, practices, and games to help manage arm stress and reduce the risk of injuries. For optimal results, athletes often wear the sleeve during high-intensity activities and recovery sessions, as it supports performance while minimizing fatigue and the risk of overuse injuries.
The ideal frequency of use may vary based on individual needs, preferences, and activity levels. To determine the best approach for your routine, consider consulting with a coach or sports health professional who can provide personalized guidance based on your goals and workload.
No, the Kinetic Arm is not a performance enhancer but rather an athletic performance support designed to optimize mechanics by promoting a safer and more efficient arm path. It offloads dynamic arm stress by stabilizing the elbow and shoulder when approaching vulnerable positions and when stress is at its highest. It does not alter skill, delivery, technique, strength, conditioning, or overall training but provides essential support during high-intensity movements.
By reinforcing proper movement patterns, the Kinetic Arm helps athletes maintain cleaner mechanics while reducing strain during critical phases of throwing, swinging, serving, and hitting. Its activated support engages at peak stress points, preserving natural motion and performance while minimizing excessive arm strain.
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.
We offer a 30-Day Return policy for all size exchange and return for refund requests.
We strive for customer satisfaction with every purchase. However, we understand that sometimes a product may not meet your individual expectations.
We have made making return requests simple for our customers. All you need is your email and order number that was provided to you via email when you ordered.
To initiate a return or exchange please click on the link below to make your request.
