LI-NING Adjustable Hand Grip Strengthener Wrist Rehabilitation Ball for Men Children's Arm Training Fitness Equipment

Upgraded thickened 4mm high-carbon steel spring for durability, wear resistance, rust resistance, and long service life (5 years guaranteed)

Ergonomic TPR anti-slip handle designed to fit finger contours for comfortable grip and effective training of hand, fingers, palm, and forearm muscles

High-carbon steel rivets ensure secure and stable assembly, preventing loosening or detachment during high force use

Silent design with multi-layer sound insulation for quiet exercise (grip noise approx. 12 dB)

Compact and portable for use anytime and anywhere (office, home, study)

Clear reset button with rotation for easy count adjustment (units and tens)

Suitable for all ages and professions to relieve hand fatigue, improve grip strength, and prevent wrist injuries such as mouse hand

Genuine LI-NING product with professional quality control and direct brand guarantee

Durable construction with premium materials, avoiding common issues like spring deformation, inaccurate counting, and handle discomfort

Designed and developed with 31 years of research experience in professional fitness equipment

Hold grip with thumb and fingers positioned as instructed for optimal muscle engagement

Squeeze and hold for one second, then slowly release to avoid muscle soreness

Consistent and planned training improves grip strength and forearm circumference over time

Total sales over 8 million units, top-selling fitness equipment on the market

Suitable for hand rehabilitation, fitness training, and daily muscle relaxation