These are Jimmy's Training Shoe. Jimmy couldn't jump at all before he got these. Jimmy was like you.

How to improve vertical leap using the Plyometric Training Shoes as shown on Seinfeld (funny episode btw :)).

According to Kramer they "isolate the muscles, the muscles have to grow or die"

If you don't believe such shoes really exist then check this site:

http://www.katapultshoes.com/

The Katapult Shoes are marketed as "The most advanced Plyometric Training Shoe"

The website states that they will:

• Increase vertical jump 5 - 10 inches

• lower 40 yd Dash by 2/10ths

• Increase reactive strength, jumping skill and coordination

• Increase Fast Twitch Muscles Fibers

• Increase Calf Mass and Definition

• Increase Range Motion

If it all sounds too good to be true then it probably is. This isn't going to happen overnight just by buying a pair. You not only need to wear them when training, there are specific exercises you need to do while wearing them.

Love to hear your comments.

Have you tried these or similar training shoes?

Did they help you jump higher?