Description
Train Explosive — The Plyometric Shoe Built for Liftoff
J99 Flex Ultra Strength plyometric shoes keep you on the balls of your feet and load the calves, building explosive jumping and sprinting power — with a high-traction outsole and shock-absorbing midsole so you can train hard, longer.


Explosiveness Comes From the Calves and Forefoot
Flat training shoes let your heels do the work — the opposite of what builds a fast first step and a higher jump.
J99 Flex shifts the load onto the balls of your feet, so every drill trains the calf and forefoot strength that powers explosive movement.
Built to Make You Better
Forefoot platform loads the calves
Builds explosive jump & sprint power
High-traction outsole for grip & stability
Shock-absorbing midsole saves your joints
Breathable for long sessions
Made for agility & plyometric work
A Closer Look






Specs
FAQ
How should I use them?
Wear them for plyometric and agility training to build calf and forefoot strength — ease in, since they load those muscles hard.
How do they fit?
Check the product images for sizing; choose your normal athletic-shoe size.
How fast does it ship?
Most orders ship quickly with tracking emailed to you.
What Athletes Are Saying
Real feedback from players and coaches who use it.
Build Your Liftoff
Put explosive power under your feet every workout. Add the J99 Flex plyometric shoes today.
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