Target development of the lower leg to improve speed and explosion with this unique training device that raises the foot onto the ball, developing the Achilles tendon and calf muscles. Use in plyometric training to maximize the stretch/preload placed on these muscles to elicit a faster and more powerful contraction. JumpSoles attach over the shoes and secure with Velcro straps. Constructed of high-grade rubber. Unit includes 1 pair of JumpSoles and training DVD. Order by shoe size (see size chart). Black. Contact area is 8" L x 7" W. 4 lbs.

 

 

 

 

Men's Sizes Women's Sizes S 5 to 7 1/2 7 to 9 1/2 M 8 to 10 1/2 10 to 12 1/2 L 11 to 14 1/2 13 to 16 1/2 XL 15 to 20 -