 | Jumpsoles are the world's most popular frontal training platforms which attach to your own shoes. By training with Jumpsoles you will build up important fast twitch muscle fibers in the lower leg. Jumpsoles will increase vertical jump 5 to 10 inches, and decrease time in the 40 yd dash by .2 seconds. Comes complete with training manual and video (or DVD for the large sizes). The Jumpsoles are now upgradeable with the all new Proprioceptor System! The version 4.0 were specially designed to use this device which develops balance and agility while preventing injury. Supercharge your Jumpsoles results. Proprioceptor plugs screw into the bottom of your Jumpsoles allowing you to do wobble exercises that build up crucial jumping muscles in your ankles and feet. Stronger ankles and feet mean more energy returned into vertical jump. You can add up to 3 extra inches to your Jumpsoles vertical with Proprioceptors! Complete with training manual & video. Proprioceptor plugs screw into the bottom of your Jumpsoles al $69.95
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