REI.com
  • Online: www.REI.com
  • URL for this product:
  • From the U.S. and Canada — Call 1-800-426-4840
  • Mon. through Sun., 4 a.m. through 11 p.m. PT.
  • International — Call 1-253-891-2500
  • Mon. through Sun., 4 a.m. through 11 p.m. PT. English language only.
Dynaflex Lighted Gyro Power Ball
bluezoomZoom image

Dynaflex Lighted Gyro Power Ball

Item # 699801

$40.00

REI Members: Orders of $75.00 or more are eligible for REI Member Free Shipping!

1.

2. Qty

3.

Product Rating
Share It
Email this to a friend Email this to a friend
Bookmark and share Bookmark and share

Build strength while improving coordination in your hands and forearms with the Dyna-Flex™ Power Ball.

  • Easy-grip outer sphere allows increased control and prolonged usage
  • Variable resistance is achieved by increasing or decreasing the speed; therapeutic for hands, wrists, arms, biceps and triceps
  • Aids in the prevention of repetitive stress injuries and carpal tunnel syndrome
  • Get the edge in rock climbing and any other sport that requires control and a strong grip
  • The faster the unit runs, the brighter the lights will be until your whole hand is engulfed in a bright glow
  • Generates up to 32 lbs. of gyroscopic pressure when maximum RPMs (13,000) are reached

Imported.

Item 699801

REI Membership

Dynaflex Lighted Gyro Power Ball Specs

Specification

Description

Weight9 ounces
Material(s)Plastic

Dynaflex Lighted Gyro Power Ball Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
Dyna-Flex Lighted Gyro Power Ball
 
4.4

(based on 15 reviews)

93%

of respondents would recommend this to a friend.

Pros

  • Lightweight (6)
  • Comfortable (4)
  • Fun (4)
  • Rugged (4)
  • Versatile (4)

Cons

    Best Uses

    • Bouldering (7)
    • Indoor (7)
    • Climbing gym (3)
    • Long climbs (3)
    • Reviewer Profile:
    • Casual/ recreational (7), Avid climber (5)

    Reviewed by 15 customers

    Sort by

    Displaying reviews 1-10

    Back to top

    Previous | Next »

    Oct

    16

    2008

    (4 of 5 customers found this review helpful)

     
    4.0

    Suprising product

    By mtbiker278

    from Maryland

    About Me Casual/ Recreational

    Site Member

    Pros

    • Highly Adjustable
    • Lightweight
    • Rugged
    • Versatile

    Cons

    • Difficult to start

    Best Uses

    • Bouldering
    • Indoor
    • Long Climbs
    • Strength training

    Comments about Dyna-Flex Lighted Gyro Power Ball:

    I was skeptical of this little ball upon first glance. I've used the stereotypical squeeze toys for hand strength, and have found they do give a good pump after a while. I bought this on an impulse and can say I'm happy I did.

    Not only does this gizmo work your forearm and hand strength, but depending on how you hold it you can also work you triceps, biceps, and shoulder muscles. Also you can vary the intensity but increasing or decreasing the speed.

    I will say that it is difficult to start without the string at first. However, you can start it without the string but flicking the little rotor with your thumb. If you lost your sting or didn't recieve one like I did, you can use a small round shoe lace (think dress shoe) to start the rotor. It takes some practice to manipulate the rotor speed, but once you understand how to move your hand it's prety easy afterwards. It took me about 10mins of tinkering.

    Overall it's a durable and relatively cheap training tool that can be used almost anywhere. One more note, it does produce a noticeable buzz when it's up at speed, but nothing obnoxious. Check out tha manufacture website for tutorials if you're having trouble.

    • Gift:
    • No

    Bottom Line Yes, I would recommend this to a friend

    (4 of 5 customers found this review helpful)

    Was this review helpful? Yes / No

     - You may also flag this review

    Please let us know what kind of issue this is:

    Jun

    27

    2008

    (3 of 3 customers found this review helpful)

     
    4.0

    addictive

    By RaMaGe

    from Sandy eggo

    About Me Casual/ Recreational

    Site Member

    Pros

    • Fun
    • Rugged

    Cons

    • Abrasive
    • Hard to start

    Best Uses

    • Indoor
    • Therapy

    Comments about Dyna-Flex Lighted Gyro Power Ball:

    highly addictive... once you start you dont want to stop, good warm up for tougher activities... and also you cant really start it unless u have the string or the starter... that flicking technique doesn't really work or im not doing it right.also the rubber on the sides starts to chafe away at the fingers. (proly because I use it for about an hour each time)

    Bottom Line Yes, I would recommend this to a friend

    (3 of 3 customers found this review helpful)

    Was this review helpful? Yes / No

     - You may also flag this review

    Please let us know what kind of issue this is:

    Sep

    13

    2007

    (3 of 8 customers found this review helpful)

     
    2.0

    Not a good product especially for the $

    By Big Dog

    from El Cerrito

    About Me Casual/ Recreational

    Site Member

    Pros

      Cons

      • Fragile

      Best Uses

      • Climbing Gym

      Comments about Dyna-Flex Lighted Gyro Power Ball:

      This product is very hard to "start". When I eventually got the string to start the Gyro after only four pulls the string got jamed inside the mechanism. Great idea but it should include a "starter" which is "sold separtely". Hopefully they will quit trying to sell add ons and just include the starter.

      Good Luck

      Big D

      Bottom Line No, I would not recommend this to a friend

      (3 of 8 customers found this review helpful)

      Was this review helpful? Yes / No

       - You may also flag this review

      Please let us know what kind of issue this is:

      Sep

      13

      2007

      (3 of 6 customers found this review helpful)

       
      5.0

      love it! fun to use

      By kenny kanarbin

      from Beverton OR

      About Me Competitive Climber

      Pros

      • Lightweight
      • Rugged
      • Versatile

      Cons

        Best Uses

        • All

        Comments about Dyna-Flex Lighted Gyro Power Ball:

        its grate! I'm only 14 and its fun to use. It realy gets me ready to climb. I've been using it since i started climbing and I've gotten alot stronger.
        Just be carful not to tuch the ball wen its spinging

        Bottom Line Yes, I would recommend this to a friend

        (3 of 6 customers found this review helpful)

        Was this review helpful? Yes / No

         - You may also flag this review

        Please let us know what kind of issue this is:

        Sep

        13

        2007

        (1 of 2 customers found this review helpful)

         
        4.0

        Coolest hand exerciser ever built!

        By AdamP

        from Denton, TX

        About Me Casual/ Recreational

        Pros

        • Fun
        • Really works
        • Versatile

        Cons

        • Wears out quickly

        Best Uses

        • Bouldering
        • Casual Climbing
        • Climbing Gym
        • Frisbee
        • Golf
        • Mountaineering
        • Typing

        Comments about Dyna-Flex Lighted Gyro Power Ball:

        This is by far the best hand, wrist, and forearm work out on the planet and there's the added bonus of being FUN! As you twist it faster and faster, the unit turns faster and thus puts more gyroscopic inertia in your hand forcing you to hold on tighter. You can use it while watching TV, movies, walking and its great fun at parties!

        Bottom Line Yes, I would recommend this to a friend

        (1 of 2 customers found this review helpful)

        Was this review helpful? Yes / No

         - You may also flag this review

        Please let us know what kind of issue this is:

        Sep

        12

        2007

        (1 of 1 customers found this review helpful)

         
        4.0

        Most Entertaining Forearm Exerciser

        By prana04

        from Duluth, MN

        About Me Avid Climber, Competitive Climber

        Site Member

        Pros

        • Entertaining
        • Lightweight
        • Versatile

        Cons

        • Noisy

        Best Uses

        • Bouldering
        • Casual Climbing
        • Climbing Gym

        Comments about Dyna-Flex Lighted Gyro Power Ball:

        This product is much more entertaining than any conventional forearm exerciser. The noise and flashing lights can be annoying to people nearby, unless you get them involved with it too.

        Bottom Line Yes, I would recommend this to a friend

        (1 of 1 customers found this review helpful)

        Was this review helpful? Yes / No

         - You may also flag this review

        Please let us know what kind of issue this is:

        Jun

        28

        2010

         
        5.0

        Amazing

        By orionallen

        from Anchorage, AK

        About Me Casual/ Recreational

        Site Member

        Pros

        • Comfortable
        • Endurance Building
        • Fun and Cool Looking
        • Lightweight
        • Rugged

        Cons

          Best Uses

          • Fun
          • Indoor
          • Muscle Training
          • Relaxing

          Comments about Dyna-Flex Lighted Gyro Power Ball:

          I am not a climber (I've always struggled doing just one pull-up) but I really enjoy using the Dyno-Flex. It really helps build muscle strength in your entire hand and lower arm - you can even feel it working on your upper arms and shoulder if you hold your arms out straight or above your head. Once you get it up to a high speed the sensation is very intense and exciting as you try to to maintain the gyroscopic forces. Everyone is correct that it does take a bit of practice to learn how to start and maintain the gyroscope. I never had much luck with the string. One thing you can do is roll it quickly on a smooth clean surface and then quickly hold your arm out and start rotating your wrist in a controlled steady manor, don't fight against the Dyno-Flex, rather let it guide your wrist around, keeping a steady rotation. If you keep this up it will pick up a lot of speed. As you get to higher and higher speeds your wrist will be moving in a much smaller circle as you try to contain the powerful gyroscopic forces.

          The more you do it the easier it becomes to start it and control its speed. Also, as it strengthens your hand muscles you will eventually be able to start it with a few swipes from your thumb and no longer need the string or a clean flat surface. And you will have an awesome handshake!

          • Gift:
          • No

          Bottom Line Yes, I would recommend this to a friend

          Was this review helpful? Yes / No

           - You may also flag this review

          Please let us know what kind of issue this is:

          Feb

          17

          2010

           
          5.0

          DynaFlex PowerBall Rules!

          By DynaFlexBall.com

          from Orem, UT

          About Me Casual/ Recreational

          Pros

            Cons

              Best Uses

                Comments about Dyna-Flex Lighted Gyro Power Ball:

                This is the most addictive and fun little toy that Ive had really. And it truly works wonders for hands, forearms and shoulders. I have noticed that my grip has improved quite a bit. I can tell that it has gotten better also because I have been able to use the device longer and longer without tiring. There is a speed meter you can get as well that shows your speed in RPMs that you achieve. my high score is 12,400RPMS!

                • Gift:
                • No

                Bottom Line Yes, I would recommend this to a friend

                Was this review helpful? Yes / No

                 - You may also flag this review

                Please let us know what kind of issue this is:

                Jan

                2

                2010

                 
                4.0

                Effective forearm workout

                By R1000

                from Florida

                Pros

                • Fun
                • Good Workout
                • Low joint stress

                Cons

                • A little fragile

                Best Uses

                • Forearm conditioning

                Comments about Dyna-Flex Lighted Gyro Power Ball:

                First of all, this thing really works. I saw some reviews on another site saying it was a toy....no way! After you spin it for few minutes your forearms will be pumped; keep going and it will really start to burn. I have not had it long enough to comment on long term conditioning but it gives me that same pumped out feeling I get towards the end of a climb so I'm guessing it will really improve my conditioning. Make sure you try the upside down movement with your fingertips shown in the video. The nice part is that it does not cause any real stress on the connective tissue in your fingers like some of the gripper type devices that I have tried.

                I would not get any of the sizes smaller than this one because it probably would not be strong enough. If you're a real beast (5.12+) the company website is now showing an even bigger one; but, this one generates sufficient force for me.

                Its not as difficult to use as people say. It takes a few minutes to figure out- much less if you just watch the video that comes with the gyro. (I suggest you watch the video anyway...it made me laugh like heck).

                You can also substantially vary the intensity of the workout by how fast you spin the gyro. This is a nice feature that is inherent in the device.

                The string works fine to get it started. Just make sure you pull it straight out otherwise it can get wrapped around the spindle. This happened to me the first day but not since. You can work the string out with a paper clip.

                Finally, this thing is not very rugged. I got one for my friend; he dropped in on a hard surface and the shell became dislocated. (note that while you are really spinning it, its easy to drop because it generates a lot of force). Luckily, we were able to take it apart an snap it back in place.

                • Gift:
                • No

                Bottom Line Yes, I would recommend this to a friend

                Was this review helpful? Yes / No

                 - You may also flag this review

                Please let us know what kind of issue this is:

                Jan

                5

                2009

                 
                5.0

                Great Product

                By NDS

                from Lincoln, NE

                About Me Casual/ Recreational

                Site Member

                Pros

                • Addicting
                • Fun
                • Good Exercise
                • More than just climbers

                Cons

                • Seems fragile

                Best Uses

                • Bouldering
                • General arm strength
                • Indoor

                Comments about Dyna-Flex Lighted Gyro Power Ball:

                Had trouble in beginning with starting, but easy to pick up. Product website shows variations for "workouts". Even works when sitting in car.

                • Gift:
                • Yes

                Bottom Line Yes, I would recommend this to a friend

                Was this review helpful? Yes / No

                 - You may also flag this review

                Please let us know what kind of issue this is:

                Displaying reviews 1-10

                Back to top

                Previous | Next »

                Dynaflex Lighted Gyro Power Ball Related Items

                Other items like this:

                You might also like:

                Join REI and Enjoy the Benefits

                Members are eligible for an annual refund on qualifying purchases. Plus, they enjoy many more benefits. Get a lifetime membership for $20.

                Add an REI membership to my order.

                How are we doing? Give us feedback on this page.

                FREE SHIPPING for REI Members on orders of $75 or more

                Free Shipping to Any REI Store!  Have your REI.com or REI-OUTLET.com order sent to your local REI store then pick it up for free.

                • Buy REI Gift Cards
                • REI Gift Cards
                • Fast, easy and one size fits all.
                • Buy now!
                • Join REI today!
                • REI Membership
                • REI member benefits include an annual refund (typically 10% on eligible purchases).
                • Join REI today!
                • Sign up for REI Gearmail®
                • and get 15% off selected items!
                • Store Locator
                • Locate an REI store near you.
                • Find a Store