The Dual Resistance Harness is perfect for speed, stride power, and leg strength training! This harness lets you change running positions without removing belts. No buckles or straps to undo; belts simply rest over hips. It’s ideal for forward, backward, and lateral agility drills or short sprints. One piece harness has two 3 inch tall waist belts connected by a 9 foot nylon strap. Waist belts accommodate up to 48 inch waists and rest securely over the hips. Black. Since 1986, Power Systems’ passion for fitness has been fueled by our customers. Power Systems is committed to ensuring people have the tools to lead active lives with professional-grade products, cutting-edge educational materials, and elite customer service. “Power Your Potential” is the philosophy that guides everything Power Systems stands for.