Train Your
Grip.
Live Longer.
Your grip is your health score. Measure it, train it, and watch your hand strength — and longevity markers — improve in 6 weeks.
Shop Grip Strength Tools
Four Steps.
One Unbreakable Grip.
Most brands sell a product. We built a system around grip health — from baseline assessment to progressive training to measurable gains.
Measure your baseline with our free grip strength calculator. See where you rank vs athletes your age — by sport.
- Free grip strength calculator
- Age & sport normative data
- Understand your health risk level
Patented hand tape and foot grips eliminate blisters, slippage, and callus damage so you train harder, more often.
- Patented grip-lock adhesive
- 6-18 grips per pack — lasts weeks
- Works in 50+ sports
A 6-week structured program with purpose-built grip training equipment and two age tracks for different goals.
- 40+ longevity & independence track
- Under 30 raw power track
- Progressive resistance equipment
Retest at week 3 and 6. See real, measurable gains. Know exactly when it's time to level up your training and gear.
- Retest against your baseline score
- Sport-specific progress benchmarks
- Join the Shadowz community
Real Gains.
Measured Live.
Watch a real customer test their grip strength before and after 6 weeks of training — using the same dynamometer used in clinical longevity research. No editing. No actors.
Grip Strength Is
A Longevity Metric
The research is unambiguous. Grip strength predicts cardiovascular health, injury risk, surgical recovery, and all-cause mortality better than most lab tests. And almost no one tracks it.