Kinetic Arm Base Layer

Kinetic Arm Base Layer

Regular price$39.99
Shipping calculated at checkout.
The Kinetic Arm Base Layer is designed to fit underneath the Kinetic Arm.

Move free with our ergonomic design that allows full range of motion and is reinforced with double overlock seams. Our dialed-in design keeps seams off of high abrasion areas to minimize friction while throwing and swinging.

We combine durability and performance with our hybrid long-sleeve construction and built-in thumbholes to help keep the base layer in place while putting on your Kinetic Arm.

Our base layers are lightweight, with 4-way stretch High-Performance fabric (265G) that wicks sweat and has an anti-odor technology to help you keep dry and comfortable in practice and game.

Available in Adult Sizes: XS, S, M, L, XL

Technical Features: 

265 G Performance Fabric  - 86% Polyester / 14% Elastane 

Easy Care Instructions:  

Machine wash cold with like colors - Tumble dry low

Do not iron or dry clean 




 K1 Brace


K2 Adult Sleeve


K2 Youth Sleeve










Please allow 2-5 business days for domestic orders to arrive.

We normally process and ship orders within 1-2 business days of receiving order. All orders placed over the weekend will be processed and fulfilled on the next business day.

International orders are limited and are subject to custom and duty fees. Please allow up to 7-21 business days to arrive.

14-Day Return Policy:

We offer a 14-day return and exchange policy for our customers to try our products.

If it does not meet your individual expectations, you may return within 14-days of receiving order for a refund. Buyer is responsible for return shipping costs and may use the carrier of their choice.

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

The Kinetic Arm is a revolutionary advancement in arm protection, designed to safeguard the elbow and shoulder while throwing, hitting, and swinging to help optimize performance and aid in arm injury prevention. Our embedded patented MuscleWeb™️ design, has been scientifically proven to offload dynamic arm stress that can lead to fatigue, pain, and arm overuse injuries.  If you play competitive or recreational sports, whether it’s baseball, softball, football, volleyball, golf, disc golf, frisbee, javelin, or racket sports these dynamic arm stabilizers can help maximize performance, expedite recovery, and minimize overuse arm injury risks.


The Kinetic Arm K1 Brace is designed and recommended for athletes who play in high-intensity and or high-volume throwing sports.  Best option for workload management, recovery and rehabilitation throwing programs. This is because the K1 Brace has a multi-adjustable strap system to help customize fit and tension to assist in acceleration and deceleration control.

The K2 Sleeve is designed for people to wear in practice and game. Players of all levels who participate in throwing and swinging sports.

K2 Sleeve is designed for adult and youth players ages 6+. The youth sleeve is engineered to give a layer of arm protection to growing athletes to improve arm mechanics, consistency, while reducing arm stress that contributes to most arm overuse injuries.

* Athletes do alternate between using the K1 and K2.

Unlike traditional arm braces that are designed to immobilize or limit motion, the Kinetic Arm K1 Arm Brace gives full range arm support without restriction to help improve mechanics and offload arm stress while throwing and swinging.

The Kinetic Arm K2 Sleeve offers more than just compression because of its patented MuscleWeb™ design that has a strategic network of elastomers built-in to the sleeve to help reinforce joint stability in the shoulder and elbow which helps overall mechanics while reducing arm stress.

The Kinetic Arm works by stabilizing the shoulder and elbow to help optimize mechanics and offload arm stress while throwing and swinging. These dynamic arm stabilizers have an embedded patented MuscleWeb™ design, which is a strategic network of elastomers that overlay joints and give a web of external support to increase joint alignment and stability, to help improve mechanics and reduce arm stress, without restricting motion. The Kinetic Arm has been tested and proven to significantly reduce arm stress that is the leading cause of most arm overuse injuries.

The Kinetic Arm can help optimize throwing mechanics by promoting cleaner arm actions, and not letting your arm lag behind or go into vulnerable positions while throwing and swinging. It helps reinforce and support the shoulder and elbow when the arm is in weakest range.

During repeatable arm actions the arm can fatigue and start to lag behind as the body rotates which can cause stress on the elbow and impingement at the shoulder, and more stress on the labrum. The internal components are flexible and pull in the same direction as your muscles to reinforce efficient movement patterns. 

No. The Kinetic Arm does not restrict motion or change delivery. These dynamic sleeves are lightweight, flexible, and designed to synchronize with all arm actions. Every sleeve can be adjusted to customize fit and tension to support different arm care needs pertaining to the shoulder and or elbow. These dynamic arm stabilizers can be worn over or under uniform.  

(If any restriction in range of motion is felt, simply shift chest part to glove side or loosen the strap).

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.

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.

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 is a dynamic arm care tool that externally stabilizes the elbow and shoulder and offloads the most stress at the end range where peak stress is the highest and where the muscles are weakest. There have been no signs or reports of muscle atrophy with long term use, because of the force generated that is required to throw or swing. 

Have any questions?

Call or text us at 770-281-9982 or email us at .