The ultimate arm trainer. Adjustable chest expander arm exerciser. Shoulder muscle training fitness equipment upper body strength training machine. Portable spring resistance home fitness equipment.

Build a powerful chest with professional-grade chest workout equipment. More than a standard Twister Arm Trainer this dynamic arm trainer precisely targets muscle groups to accelerate growth and enhance definition through chest clip muscle activation. Perfect as both a chest trainer for men and arm trainer for women it strengthens chest arms shoulders and back with adjustable resistance for all levels - from beginners to elite athletes.