Tip #9: Springbak speedsoles. Former L.A. Laker Bill Crow is the genius behind these micro thin shoe inserts, made of patented material, that are being used by U.S.A. Olympic volleyball teams. Remember the old saying "It must be the shoes", well it is if you have these speedsoles in them! When I first saw them I thought the claims were a farce, so I had to buy some to put them to the test. We at Bionic Plyometrics found with the inserts result in an immediate 2 inch vertical jump increase & drop in 40 yard dash times of 1/10 of a second. These springbak rubber shoe inserts are gradually becoming more popular and retail for about $25. I've recently decided to sell them in light of these findings! Another interesting point to mention is that on heavier atheletes (over 200lbs) actually using 2 pairs of inserts gave a 3" increase in vertical! Now buying 2 pairs might be a little costly but how else can you "insert" that much more vertical into your game? If your already an accomplished jumper in the high 30's imagine what can happen wen you integrate these secrets and the speedsoles to get you up close to the 40" mark. If you've never experienced that well lets jus say its like taking off from a trampoline!
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