3D product image of Kinetic Arm K2 Youth Sleeve right handed variant front view
3D product image of Kinetic Arm K2 Youth Sleeve left handed variant front view
Dynamic Shoulder & Elbow Stabilizer - K2 Youth Sleeve
Dynamic Shoulder & Elbow Stabilizer - K2 Youth Sleeve
Kinetic Arm K2 Sleeve
Dynamic Shoulder & Elbow Stabilizer - K2 Youth Sleeve
K2 Adult Sleeve sizing chart
K2 Sleeve Fitting Instruction Video
Call out image on the features of the K2 Sleeve showing K-Tech Polymers, Bio Knit Weave, Detachable Straps, and polymers illuminated glowing blue.
3D product image of Kinetic Arm K2 Youth Sleeve right handed variant front view
3D product image of Kinetic Arm K2 Youth Sleeve left handed variant front view
Dynamic Shoulder & Elbow Stabilizer - K2 Youth Sleeve
Dynamic Shoulder & Elbow Stabilizer - K2 Youth Sleeve
Kinetic Arm K2 Sleeve
Dynamic Shoulder & Elbow Stabilizer - K2 Youth Sleeve
K2 Adult Sleeve sizing chart
K2 Sleeve Fitting Instruction Video
Call out image on the features of the K2 Sleeve showing K-Tech Polymers, Bio Knit Weave, Detachable Straps, and polymers illuminated glowing blue.

Dynamic Shoulder & Elbow Stabilizer - K2 Youth Sleeve

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Kinetic Arm is the world’s first dynamic, dual-joint arm support designed to provide coordinated stabilization for both the shoulder and elbow during repetitive, high-demand movement. Constructed with medical-grade materials and powered by multi-patented MuscleWeb® technology, it delivers intelligent, directional support that responds to motion—engaging during high-stress phases without restricting natural range of motion, speed, or power.Informed by biomechanical research examining dynamic arm stress, Kinetic Arm is engineered to support efficient mechanics during throwing, swinging, and overhead activity. It is worn by athletes and active individuals across baseball, softball, football, tennis, volleyball, golf, basketball, and other arm-intensive sports—from youth participation through professional levels—and is commonly used under the guidance of sports medicine and performance professionals.
NON-STANDARD SIZING: Refer to Size Chart

Products do not follow standard sizing - Please refer to sizing chart before ordering

Size
Arm
NEED ADULT SIZING? Shop Adult Sleeve.
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SHIPPING & DELIVERY:

Orders are typically processed within 1-2 business days (Monday–Friday). Orders placed before 12:00 PM EST or over the weekend will be processed and shipped on the next business day.

Domestic orders typically arrive within 2-5 business days. Once your order ships, you’ll receive a tracking number from the carrier to monitor your delivery status.

International shipment capabilities are currently limited, and are subject to custom fees which can take up to 7-21 business days to arrive.

Returns & Exchanges

We offer a 30-day return policy for returns and exchanges, with exceptions made for holiday extensions.

Holiday Season Extended Return Policy: To help with holiday shopping, we’re offering a holiday season return extension. Starting November 1, 2025, through December 31, 2025, orders can be returned or exchanged within 45 days of delivery.

Our standard 30-day return policy continues to apply for purchases outside of this period. Returns must be in original condition, and refunds will be issued to the original payment method.

To initiate a return or size exchange request please CLICK HERE

Gently-Used Gear: These products are discounted because they were either used as demos for events/shows, or were returned/exchanged within our 30-day return policy, and may have variations of minor aesthetic imperfections due to light usage that does not affect functionality of the product. By purchasing gently used gear from our website, you acknowledge that these items may exhibit signs of wear or usage and are not eligible for returns for refunds.

Final Sale Items: Products that are significantly discounted or listed as clearance and sold as final sale are not eligible for returns or refunds.

Please refer to our Return Policies Page for more details on processing and eligibility.

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MEDICAL-GRADE MATERIALS
INNOVATIVE DESIGN

Engineered with a precision bio-knit weave and HD thermal-bonded K-Tech® polymers, Kinetic Arm is constructed using medical-grade materials to deliver movement-responsive support during high-stress activity—without restricting natural range of motion, speed, or power. At the core is multi-patented MuscleWeb® technology, which creates an external support network designed to respond in real time as the arm moves. Strategically placed polymer zones engage during peak load phases to provide targeted reinforcement when the joints experience the greatest demand. The result is more efficient mechanics, better management of arm stress and fatigue, and consistent performance during repetitive, arm-intensive activity.

Women's volleyball player wearing the Kinetic Arm support and compression sports sleeve.
VALIDATED BY RESEARCH
TESTED & PROVEN

The Kinetic Arm has been tested using advanced IMU sensors and 3D motion capture technology. Independent studies performed have been validated by biomechanics experts and medical professionals.

✓ Significant reduction in varus elbow torque and dynamic arm stress during throwing motions
✓ Enhanced force distribution across the shoulder and elbow complex
✓ Maintained natural throwing mechanics with zero restriction to arm speed or movement patterns
✓ Optimized mechanics allowing athletes to maintain performance while managing arm stress
✓ Expedited recovery timeline – Case study documented athlete's return to competition within 5 weeks during medically supervised rehabilitation

Shoulder & Elbow
Dynamic Support

The K2 Youth Sleeve is the world's first dynamic arm stabilizer to provide unrestricted shoulder and elbow support that has been scientifically proven to reduce dynamic arm stress during high-intensity activity. Developed through over 10 years of biomechanical research and validated by independent testing, this revolutionary dual-joint arm sleeve reduces arm stress without restricting mobility or compromising performance.

Engineered for athletes and active individuals who depend on their arms for throwing, swinging, overhead motions, and repetitive arm movements, this arm support sleeve optimizes mechanics and reduces stress across baseball, softball, football, volleyball, tennis, pickleball, golf, basketball, javelin, rodeo roping, construction, painting, fitness training, and more.

HOW IT WORKS

Targeted Elbow & SHoulder Support

Close-up of the Kinetic Arm K2 Sleeve on a shoulder and elbow, with glowing blue lines highlighting the patented MuscleWeb® support system.

Elbow Stabilization

K-Tech polymers overlay both the medial (inside) and lateral (outside) elbow joint, reinforcing muscles, ligaments, and tendons during vulnerable ranges. This helps minimize varus and valgus stress, reduce elbow torque, and maintain consistent arm path.

Close-up of a female athlete wearing the Kinetic Arm K2 Sleeve, with glowing blue lines highlighting the MuscleWeb® support system over the back (posterior) of the shoulder and elbow.

Shoulder stabilization

Focused support targets anterior (front) and posterior (rear) shoulder zones, including the labrum, biceps tendon, and rotator cuff. This reduces strain during overhead motions and supports proper mechanics during acceleration and deceleration phases.

Young baseball player in action throwing on baseball field, wearing Kinetic Arm K2 Youth Sleeve, demonstrating unrestricted movement and highlighting MuscleWeb® polymers.
Dual-Joint Stabilization
ZERO RESTRICTION

The K2 Sleeve delivers simultaneous shoulder and elbow support aligned with your natural movement patterns. Unlike traditional arm braces that restrict motion or basic compression sleeves that apply only uniform pressure, this dual-joint design provides strategic stabilization while maintaining full mobility.

Key Performance Benefits:

✓ Full range of motion maintained
✓ Strategic support during peak stress
✓ Lightweight, breathable Bio-Knit fabric
✓ Secure fit that doesn't slip

The K2 Youth Sleeve maintains proper arm mechanics during throwing, swinging arm motions.

K2 BioKinetic® Sleeve
YOUTH SLEEVE

The K2 Youth Sleeve includes a detachable chest strap adjustable for customized fit and an adjustable wrist wrap that prevents migration. Both straps feature a silicone matrix for anti-slip texture.

Adjust Shoulder Support:

  • Shift chest section away from dominant arm → increases front shoulder support
  • Shift chest section toward dominant arm → increases back shoulder support

This positions K-Tech polymer tension exactly where your motion needs it most.

Additional chest straps available separately.

Watch Fitting Video

WHAT PARENTS ARE SAYING

REAL CUSTOMERS - REAL REVIEWS - REAL RESULTS