ProPulse® Speed Trainers dark side and a more durable

and a more durable

Warranty: This product is made and backed by Winding Ropes Warranty

Includes: Single 3/4 LB rope

and it's no coincidence that this rope is crafted in precisely that size

Or are you making your legs do all the work and 'carry' your upper body

ProPulse® Speed Trainers dark side and a more durableProPulse Speed Trainers work by answering a simple question, What do you do with your upper body when you run? Are you using your upper body to generate more power, efficiency, and balance? Or are you making your legs do all the work and 'carry' your upper body?" YOU CAN RUN FASTER AND LONGER WITH THE PROPULSE SPEED TRAINER IN YOUR HANDS! *Free shipping applies to the Contiguous US only.