Front view of male mannequin wearing the Kinetic Arm K2 adult sleeve, showing ergonomic design for shoulder and elbow support.
Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve
Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve
Side view of male mannequin wearing the Kinetic Arm K2 adult sleeve, showing ergonomic design for shoulder and elbow support.
Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve
Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve
K2 Adult Sleeve sizing chart
Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve
Front view of male mannequin wearing the Kinetic Arm K2 adult sleeve, showing ergonomic design for shoulder and elbow support.
Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve
Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve
Side view of male mannequin wearing the Kinetic Arm K2 adult sleeve, showing ergonomic design for shoulder and elbow support.
Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve
Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve
K2 Adult Sleeve sizing chart
Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve

Dynamic Shoulder & Elbow Stabilizer - K2 Adult Sleeve

$239.99
/
Shipping calculated at checkout.
The world's first dynamic multi-joint stabilizer delivering simultaneous shoulder and elbow support. Features MuscleWeb® technology providing adaptive stabilization during repetitive arm movements while maintaining unrestricted range of motion. Scientifically proven to reduce dynamic arm stress and optimize mechanics. Trusted by athletes from youth to professional levels.
NEED YOUTH SIZING? Shop Youth Sleeve.

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

Size
Arm
NON-STANDARD SIZING: Refer to Size Chart
  • In stock, ready to ship
  • Inventory on the way

 

 MEASURE TWICE - ORDER ONCE!

 

 

 

 

 

 

 

 

 

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.

Web seal banner
Tested & Proven to Reduce Arm Stress
Dynamic Arm Support

The K2 Adult 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.

Adult male using the men's Kinetic Arm shoulder and elbow support and compression sleeve for baseball.
Female softball pitcher wearing the Kinetic Arm Compression and Support sleeve.
Supports without Restriction
Dual-Joint Stabilization

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 Adult Sleeve maintains proper arm mechanics during throwing, swinging arm motions.

Adaptive Support
Muscleweb® Technology

MuscleWeb® technology is our multi-patented system combining Bio-Knit weave with HD thermal-bonded K-Tech polymers. This creates an external web of support that responds in real-time during high-stress arm movements.

Strategically positioned K-Tech polymer zones deliver supportive tension during peak stress ranges- exactly when your joints need it most.

Result: Optimized mechanics, reduced stress and fatigue, sustained performance.

WATCH 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.

BACKED 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

INNOVATIVE CONSTRUCTION

Engineered with customized Bio-Knit weave and HD thermal-bonded K-Tech polymers for maximum dynamic arm support without restricting movement during high-stress arm actions—delivering comfort, mobility, and durability.

4-Way Stretch Zones
Bio-KNIT Weave

The K2 Adult Sleeve features reinforced construction designed to support arms during dynamic movements. The customized Bio-Knit weave provides the structural foundation—delivering 4-way stretch, compression, and force distribution across the entire arm.

This fabric layer works synergistically with HD thermal-bonded K-Tech polymers for comprehensive arm stress reduction. The Bio-Knit weave distributes forces evenly while the K-Tech polymers add directional stabilization at peak stress points—together optimizing performance during throwing, swinging, and overhead motions.

Closeup showing the 4-way stretch material of the Kinetic Arm compression and support sleeve
Dial in Support
Adjustable Fit

The K2 Adult 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

CUSTOMER REVIEWS

REAL CUSTOMERS - REAL RESULTS