Total Jump System: How to Jump 8-14 Higher or More

You can get the same info and training guide on youtube or elsewhere for free...

Good instructive book

A book of 30 pages (with a lot of big pictures); I guess it's ok for the beginners who have absolutely no experience with the training but this book doesn't bring anything seriously for athletes who know just a little about excercise. You can find the 8 exercise on internet. More some pages are full of obvious thing ("Buy a good pairs of shoes) (believe in yourself) and useless pictures ( Pair of shoes) without anything scientific about the content. The only planification in this book is a Spreadsheet at the end who is really close to the spreadsheet of the Air Alert 3 program. I don't recommend buy this product untill you have absolutely no clue about training but searching on internet still better than this.

It didn’t give me vert

Excellent thank you my brother